https://kelibron.com/ 2026-10-16 weekly 1.0 https://kelibron.com/zh/ 2026-10-16 weekly 1.0 https://kelibron.com/guide/ 2026-10-16 weekly 0.9 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)Learn to measure with calipers and micrometers — Guides to vernier, dial and digital calipers and micrometers: how to read them, measure outside diameters, bores and depths, avoid common mistakes, judge tolerances and keep instruments calibrated. Each guide links to a matching exercise in the 3D lab.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/ 2026-10-16 weekly 0.9 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）学会用卡尺和千分尺测量 — 游标、带表、数显卡尺和外径千分尺（螺旋测微器）的使用指南：怎么读数，怎么测外径、内孔、深度和孔距，哪些用法会让读数出错，怎样按公差判定合格，量具怎么校准和管理。每篇都配有对应的三维实训场景。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/basics/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/basics/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/reading/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/reading/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/methods/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/methods/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/tolerance/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/tolerance/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/instruments/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/instruments/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/training/ 2026-10-16 monthly 0.7 https://kelibron.com/zh/guide/training/ 2026-10-16 monthly 0.7 https://kelibron.com/guide/basics/length-units-traceability/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-reading.webp https://kelibron.com/media/scenes/en/digital-reading.webpDigital caliper on a stepped shaft (readout view)Length units and traceability — How the metre is defined by the speed of light, how millimetres, micrometres and inches relate (1 in = 25.4 mm exactly), and what makes a measurement traceable: an unbroken chain of calibrations from the SI definition to the gauge on your bench.https://kelibron.com/media/scenes/en/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/basics/length-units-traceability/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-reading.webp https://kelibron.com/media/scenes/zh/digital-reading.webp数显卡尺测阶梯轴（读数视角）长度单位与量值溯源 — 米怎样由光速定义，毫米、微米与英寸怎样换算（1 英寸 = 25.4 mm，准确值），以及测量结果怎样才算“可溯源”：一条有文件记录、不间断的校准链，从国际单位制的定义一直连到车间里的量具。https://kelibron.com/media/scenes/zh/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/basics/measurement-methods/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftMeasuring methods — The main kinds of measurement: direct (read the size off the instrument), indirect (calculate it from other measured sizes) and comparative (measure the difference from a standard of known size), with workshop examples and where the errors come from.https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/basics/measurement-methods/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径测量方法 — 几种主要的测量方法：直接测量（从量具上直接读出所要的尺寸）、间接测量（由其他测得尺寸计算）与比较测量（只测与已知尺寸标准件的差值），附车间实例，以及各自的误差来源。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/basics/reading-dimensions-on-drawings/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-reject.webp https://kelibron.com/media/scenes/en/shaft-reject.webpJudge an oversize shaft (rejected)Sizes and tolerances on a drawing — How to read a size on an engineering drawing: nominal size and limit deviations, how to work out the upper and lower limits, symbols such as Ø, R and 6×Ø7, what a two-point size is, and what the general tolerance note (GB/T 1804, ISO 2768) means for sizes without a tolerance.https://kelibron.com/media/scenes/en/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/basics/reading-dimensions-on-drawings/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-reject.webp https://kelibron.com/media/scenes/zh/shaft-reject.webp判定超差的轴（不合格）图纸上的尺寸与公差 — 怎样读机械图纸上的尺寸：公称尺寸与极限偏差，上、下极限尺寸怎么算，Ø、R、6×Ø7 等符号，什么是两点尺寸，以及没有标注公差的尺寸适用的一般公差（GB/T 1804、ISO 2768）。https://kelibron.com/media/scenes/zh/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/basics/measurement-conditions/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-debris.webp https://kelibron.com/media/scenes/en/error-debris.webpWrong use: chip on a jaw faceMeasuring conditions — What has to be right before a reading can be trusted: sizes refer to 20 °C, part and instrument at the same steady temperature, clean measuring faces and parts free of burrs, and a light, steady measuring force, with a checklist and a worked thermal-expansion example.https://kelibron.com/media/scenes/en/error-debris.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/basics/measurement-conditions/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-debris.webp https://kelibron.com/media/scenes/zh/error-debris.webp错误用法：量爪测量面有切屑测量条件 — 读数可信的前提：尺寸以 20 °C 为准，工件和量具处于相同而稳定的温度，测量面和工件清洁、无毛刺，测量力轻而稳定；附测量前检查清单和热膨胀算例。https://kelibron.com/media/scenes/zh/error-debris.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/basics/readings-and-rounding/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-pin.webp https://kelibron.com/media/scenes/en/digital-pin.webpDigital caliper: Ø12 ±0.03 pinRecording readings — How to write down a measurement: keep the digits the instrument resolves (12.00 mm, not 12), round by the rules of GB/T 8170 (round half to even, round once), round a result to match its uncertainty (GUM), and record the unit and the instrument.https://kelibron.com/media/scenes/en/digital-pin.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/basics/readings-and-rounding/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-pin.webp https://kelibron.com/media/scenes/zh/digital-pin.webp数显卡尺测 Ø12 ±0.03 销读数的记录 — 测量读数怎样记录：保留量具分辨出的全部位数（写 12.00 mm 而不是 12），按 GB/T 8170 修约（四舍六入五成双、一次修约），结果按不确定度修约（GUM），并写明单位和所用量具。https://kelibron.com/media/scenes/zh/digital-pin.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/caliper-basics/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)How to read and use a caliper — Step-by-step guide to reading vernier (0.02 mm), dial and digital calipers, measuring outside diameter, bore and depth, checking zero, avoiding common mistakes and judging tolerances, with a free 3D caliper simulator.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/caliper-basics/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）卡尺使用与读数指南 — 游标卡尺（0.02 mm）、带表卡尺、数显卡尺的读数方法与使用步骤：外径、内径、深度测量，零位检查，常见错误用法及纠正，公差判定；配套免费三维卡尺仿真实训室。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)How to read a vernier caliper — Read a vernier caliper step by step: main scale plus coinciding vernier line × least count. 10-, 20- and 50-division verniers (0.1, 0.05, 0.02 mm), positive and negative zero error, parallax, practice examples and a free online vernier caliper simulator.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）游标卡尺怎么读 — 游标卡尺读数方法：主尺整毫米数 + 对齐游标格数 × 分度值。10分度、20分度、50分度游标卡尺（0.1、0.05、0.02 mm）读数规则，正负零误差修正，视差，读数例题，并可在线游标卡尺仿真练习。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/inch-vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/inch-vernier-reading.webp https://kelibron.com/media/scenes/en/inch-vernier-reading.webpRead an inch vernier caliper on a Ø1.000 in shaft (readout view)How to read an inch vernier caliper — Read an inch vernier caliper to 0.001 in: whole inches, 0.100 in figures and 0.025 in marks on the beam, plus the coinciding vernier line × 0.001 in (1.275 + 0.012 = 1.287 in). Also the 1/128 in fractional vernier, inch to mm, and a reading that sits on a limit.https://kelibron.com/media/scenes/en/inch-vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/inch-vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/inch-vernier-reading.webp https://kelibron.com/media/scenes/zh/inch-vernier-reading.webp在 Ø1.000 in 轴上读英制游标卡尺（读数视角）英制游标卡尺怎么读 — 英制游标卡尺读到 0.001 in：尺身上的整英寸、0.100 in 数字格和 0.025 in 小格，加对齐游标格数 × 0.001 in，例如 1.275 + 0.012 = 1.287 in。另讲 1/128 in 分数游标、英寸换毫米，以及读数正好落在极限上时怎么办。https://kelibron.com/media/scenes/zh/inch-vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/dial-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/dial-reading.webp https://kelibron.com/media/scenes/en/dial-reading.webpRead a dial caliper on a bushing (readout view)How to read a dial caliper — Read a dial caliper: whole millimetres on the beam plus hundredths on the dial. One needle revolution is 1 mm in 100 divisions. How to zero the bezel, lock it, avoid shock and read without parallax, and practise online.https://kelibron.com/media/scenes/en/dial-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/dial-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/dial-reading.webp https://kelibron.com/media/scenes/zh/dial-reading.webp在轴套上读带表卡尺（读数视角）带表卡尺怎么读 — 带表卡尺读数与调零：尺身读整毫米，表盘读百分位（指针一圈通常 1 mm、100 格）；说明表圈调零与锁紧、防摔防撞和避免视差，并可在 KELIBRON 实训室在线练习。https://kelibron.com/media/scenes/zh/dial-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/digital-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-reading.webp https://kelibron.com/media/scenes/en/digital-reading.webpDigital caliper on a stepped shaft (readout view)How to use a digital caliper — Digital caliper buttons explained: ORIGIN sets the absolute zero, ZERO/ABS switches to relative (INC) measurement and back, UNIT switches mm/inch, HOLD freezes the value. Resolution versus accuracy, battery, IP rating, data output, and online practice.https://kelibron.com/media/scenes/en/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/digital-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-reading.webp https://kelibron.com/media/scenes/zh/digital-reading.webp数显卡尺测阶梯轴（读数视角）数显卡尺怎么用 — 数显卡尺按键说明：ORIGIN 设定绝对零点，ZERO/ABS 切换相对测量（INC）与绝对测量，UNIT 切换毫米/英寸，HOLD 锁定读数；分辨力与准确度的区别、电池、防护等级、数据输出及在线练习。https://kelibron.com/media/scenes/zh/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/micrometer/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/micrometer/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/micrometer-zero-setting/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/micrometer-zero-setting/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/micrometer-technique/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/micrometer-technique/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/micrometer-types/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/micrometer-types/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/dial-indicator-reading/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/dial-indicator-reading/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/lever-indicator-cosine-error/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-tilt.webp https://kelibron.com/media/scenes/en/error-tilt.webpWrong use: caliper tilted on a shaftLever test indicators and cosine error — How a lever test indicator (lever dial gauge) works, when to use it instead of a plunger dial indicator, and how stylus tilt causes cosine error: true displacement = reading × cos α, a correction table with a worked example, and setup tips: square the stylus or keep the tilt under 10°.https://kelibron.com/media/scenes/en/error-tilt.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/lever-indicator-cosine-error/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-tilt.webp https://kelibron.com/media/scenes/zh/error-tilt.webp错误用法：卡尺倾斜测轴杠杆表与余弦误差 — 杠杆表（杠杆指示表）的原理与用法：什么场合用它代替百分表；测头倾斜造成的余弦误差（真实位移 = 读数 × cos α）、修正系数表与算例；安装要点：把测杆摆到与位移方向垂直，夹角控制在 10° 以内或按 cos α 修正。https://kelibron.com/media/scenes/zh/error-tilt.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/comparative-measurement/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/comparative-measurement/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/reading/physics-length-measurement/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)Physics practical: length measurement — The Class 11 vernier caliper experiment (NCERT Experiment 1): least count 0.1 mm, zero error, a sphere’s diameter, a block’s density and a beaker’s volume.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/physics-length-measurement/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）高中物理：长度的测量 — 高中物理“长度的测量”实验：10、20、50 分度游标卡尺与螺旋测微器（千分尺）读数方法，零误差修正，有效数字与单位换算，测量试管外径、内径和深度，常见读数题易错点，在线游标卡尺仿真练习。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/least-count-vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)Least count of a vernier caliper — Least count of a vernier caliper = 1 main scale division ÷ number of vernier divisions, e.g. 1 mm ÷ 10 = 0.1 mm (0.01 cm). Worked examples for 10, 20 and 50 divisions, positive and negative zero error with the zero correction, and the Class 11 practical table.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/reading/least-count-vernier-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）游标卡尺的精度（分度值）怎么算 — 游标卡尺的精度（分度值）= 主尺 1 格 ÷ 游标格数，例如 1 mm ÷ 10 = 0.1 mm。附 10、20、50 分度和主尺不是 1 mm 时的算法、正负零误差怎么判断与修正、负零误差为什么从游标末端数，以及实验记录表。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/reading/screw-gauge/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/reading/screw-gauge/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/methods/inspection-characteristics/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/keyway-outside.webp https://kelibron.com/media/scenes/en/keyway-outside.webpMeasure a Ø35 keyway shaftFinding the inspection characteristics on a drawing — Turn a drawing into a list of inspection characteristics: which requirements count, how to number (balloon) them, how to write the limits, and what key-characteristic marks mean, with a stepped-shaft example (Ø20 0/−0.05 → 19.95–20.00 mm).https://kelibron.com/media/scenes/en/keyway-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/inspection-characteristics/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/keyway-outside.webp https://kelibron.com/media/scenes/zh/keyway-outside.webp测量 Ø35 键槽轴外径读图并提取检验特性 — 把图纸变成检验特性清单：哪些要求算检验特性，怎样编号（打气泡），怎样写出上、下极限尺寸，关键特性标记由谁定义；附阶梯轴示例（Ø20 0/−0.05 → 19.95～20.00 mm）。https://kelibron.com/media/scenes/zh/keyway-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/measurement-plan/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftHow to measure a machined part — A practical way to decide how to measure a part: read the drawing, list each feature and tolerance, pick an instrument by the 10:1 rule, choose the method and the number of points, then record, with a table of common features (diameters, bores, depths, steps, centre distances, keyways, threads, form tolerances) and what to use.https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/measurement-plan/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径工件怎么测量 — 制定测量方案的实用方法：读图纸，列出每个要素和公差，按十分之一原则选量具，确定测量方法与测点，最后记录。附常见要素（外径、内孔、深度、台阶、孔距、键槽、螺纹、形位公差）选什么量具一览表。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/measuring-common-parts/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftMeasuring common parts — Practical measuring routines for common machined parts: shafts (several positions, two directions), bushings (OD, bore, length, wall), flanges (OD, bore, thickness, hole pitch), gear tip diameter (even and odd teeth), blind-hole depth and housings (large OD with light, even force).https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/measuring-common-parts/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径常见工件怎么测 — 常见机加工件的卡尺测量流程：轴（多截面、两个方向）、轴套（外径、内孔、长度、壁厚）、法兰（外径、内孔、厚度、孔距）、齿轮齿顶圆（偶数齿与奇数齿）、盲孔深度与壳体（大外径、轻力均匀测量）。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/measuring-a-bore/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/bushing-bore.webp https://kelibron.com/media/scenes/en/bushing-bore.webpMeasure the bore of a bushingHow to measure a bore — How to measure a bore with a caliper: inside jaws well into the hole and across the centre, rock for the largest reading, take the smallest along the axis, repeat at 90°. Plus blind-hole depth with the depth rod, judging against the tolerance and when to switch to an inside micrometer.https://kelibron.com/media/scenes/en/bushing-bore.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/measuring-a-bore/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/bushing-bore.webp https://kelibron.com/media/scenes/zh/bushing-bore.webp测量轴套内孔孔径怎么测 — 孔径怎么测？卡尺内测量爪伸进孔中部并通过中心，径向轻摆取最大值、轴向取最小值，再在互相垂直的方向复测；盲孔深度用深度尺，尺身端面贴紧孔口。公差更严时改用内测千分尺、三爪内径千分尺等，附三维演示与错误用法。https://kelibron.com/media/scenes/zh/bushing-bore.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/bore-gauge/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/bushing-bore.webp https://kelibron.com/media/scenes/en/bushing-bore.webpMeasure the bore of a bushingMeasuring a bore with a dial bore gauge — How a dial bore gauge (internal dial indicator) measures a bore by comparison: set it to size on a ring gauge or gauge blocks, rock it in the bore, and read the minimum at the turning point. Bore size = setting size + signed reading, with a worked example on a Ø28 bushing bore.https://kelibron.com/media/scenes/en/bushing-bore.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/bore-gauge/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/bushing-bore.webp https://kelibron.com/media/scenes/zh/bushing-bore.webp测量轴套内孔内径百分表测孔 — 内径百分表（GB/T 8122-2024 内径指示表）怎么用：在环规或量块上对到公称尺寸，测头伸入孔内沿轴向截面轻轻摆动，取转折点的最小读数；孔径 = 调零尺寸 + 读数（带符号）。附 Ø28 衬套孔算例与分度值、检定的现行标准。https://kelibron.com/media/scenes/zh/bushing-bore.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/step-and-center-distance/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/stepped-small.webp https://kelibron.com/media/scenes/en/stepped-small.webpØ20 OD of a stepped shaftSteps, hole-to-edge and centre distance — Measure a step height with the depth rod or the step faces, hole-to-edge distance, and the centre distance of two holes with a caliper: C = L(outer) − (d1 + d2)/2 or C = L(inner) + (d1 + d2)/2, with examples and accuracy notes.https://kelibron.com/media/scenes/en/stepped-small.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/step-and-center-distance/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/stepped-small.webp https://kelibron.com/media/scenes/zh/stepped-small.webp阶梯轴 Ø20 段外径卡尺测台阶、孔边距与中心距 — 用卡尺测台阶高度（深度尺或台阶测量面）、孔到边距离和两孔中心距：C = L外 − (d1 + d2)/2 或 C = L内 + (d1 + d2)/2，附例题与精度注意事项。https://kelibron.com/media/scenes/zh/stepped-small.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/measuring-runout/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftRadial and axial runout with a dial indicator — Runout (circular run-out) per GB/T 1182-2018 and ISO 1101: rotate the part one full revolution under a dial indicator and take the largest minus the smallest reading. Radial runout on a shaft between centres or in a V-block, axial (face) runout, and total run-out, with a worked example.https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/measuring-runout/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径径向跳动与轴向跳动 — 跳动（圆跳动）按 GB/T 1182-2018 与 ISO 1101：工件绕基准轴线转一整圈，位置固定的指示表最大与最小读数之差即跳动值。径向跳动测外圆、轴向跳动（旧称端面跳动）测端面，两顶尖或 V 形块支承，附算例。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/first-article-inspection/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/flange-outside.webp https://kelibron.com/media/scenes/en/flange-outside.webpMeasure the outside diameter of a flangeFirst article inspection and inspection record — How to do a first article (first-off) inspection: when it is needed, how to number the drawing characteristics, which instrument to use, and how to fill in the inspection record with actual values and decisions, with a worked example.https://kelibron.com/media/scenes/en/flange-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/first-article-inspection/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/flange-outside.webp https://kelibron.com/media/scenes/zh/flange-outside.webp测量法兰外径首件检验与检验记录 — 首件检验的做法：什么时候要做首检，图纸特性怎么编号，按公差为每个特性选量具并确认校准有效，检验记录怎么填实测值和合格判定结论，附数显卡尺测轴径的检验记录填写示例。https://kelibron.com/media/scenes/zh/flange-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/inspection-records/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-reject.webp https://kelibron.com/media/scenes/en/shaft-reject.webpJudge an oversize shaft (rejected)Inspection records and reports — What an inspection record needs so others can trace and check it: header fields, one line per characteristic with the actual value, instrument ID and decision, and how to record a nonconformity, with an Ø20 0/−0.05 shaft measured at 20.07 mm.https://kelibron.com/media/scenes/en/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/inspection-records/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-reject.webp https://kelibron.com/media/scenes/zh/shaft-reject.webp判定超差的轴（不合格）检验记录与报告 — 检验记录要写哪些内容才能让别人追溯和复核：表头栏目，每项特性一行（实测值、量具编号、判定），以及不合格项怎么记录（ISO 9001:2015 第 8.7.2 条）；附超差轴 Ø20 0/−0.05 实测 20.07 的示例。https://kelibron.com/media/scenes/zh/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/measurement-errors/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-tilt.webp https://kelibron.com/media/scenes/en/error-tilt.webpWrong use: caliper tilted on a shaftCaliper measurement errors and how to avoid them — Why caliper readings go wrong and how to avoid it: parallax, Abbe error, tilt along the axis (L / cos α), zero error, measuring force, dirt and burrs, temperature, worn jaws, off-centre bore readings and unseated depth readings.https://kelibron.com/media/scenes/en/error-tilt.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/methods/measurement-errors/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-tilt.webp https://kelibron.com/media/scenes/zh/error-tilt.webp错误用法：卡尺倾斜测轴卡尺测量误差及避免方法 — 卡尺读数为什么会错、如何避免：视差、阿贝误差、沿轴倾斜（L / cos α）、零误差、测量力、脏物毛刺、温度、量爪磨损，以及测孔偏离中心、测深尺身未贴紧等误差。https://kelibron.com/media/scenes/zh/error-tilt.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/methods/micrometer-errors/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/methods/micrometer-errors/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/tolerance/tolerances-and-fits/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-reject.webp https://kelibron.com/media/scenes/en/shaft-reject.webpJudge an oversize shaft (rejected)Tolerances and fits basics — Limits and fits for beginners: nominal size, upper and lower deviation, tolerance band, IT grades, hole-basis (H) and shaft-basis (h) systems, clearance, transition and interference fits, with worked examples (Ø20H7/g6) and how to judge pass or fail.https://kelibron.com/media/scenes/en/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/tolerances-and-fits/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-reject.webp https://kelibron.com/media/scenes/zh/shaft-reject.webp判定超差的轴（不合格）公差配合入门 — 公差与配合基础：公称尺寸、上偏差与下偏差、公差带、标准公差等级 IT、基孔制（H）与基轴制（h）、间隙配合、过渡配合、过盈配合，Ø20H7/g6 算例，以及测量后如何判定合格。https://kelibron.com/media/scenes/zh/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/choosing-instruments/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/disc-outside.webp https://kelibron.com/media/scenes/en/disc-outside.webpVernier caliper on a Ø60 aluminium discCaliper or micrometer? Choosing the instrument — Choose the instrument from the tolerance: its accuracy should be about one tenth of the tolerance band. When a caliper is enough, when you need a micrometer, a dial indicator or a plug gauge, and how a micrometer is read.https://kelibron.com/media/scenes/en/disc-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/choosing-instruments/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/disc-outside.webp https://kelibron.com/media/scenes/zh/disc-outside.webp游标卡尺测 Ø60 铝圆盘外径卡尺还是千分尺？按公差选量具 — 按公差选量具：准确度约为公差带的十分之一（做不到时常取四分之一）；讲清何时用卡尺就够、何时改用千分尺、百分表或塞规，对比卡尺与外径千分尺，并给出千分尺读数要点。https://kelibron.com/media/scenes/zh/disc-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/repeated-measurements/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftRepeated measurements: mean and standard deviation — How to summarise repeated readings of the same part: the mean, the experimental standard deviation s, and the standard deviation of the mean s/√n, with the GUM formulas and a five-reading caliper example (20.088 mm, s = 0.0228 mm, s/√5 = 0.0102 mm).https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/repeated-measurements/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径重复测量：平均值与标准偏差 — 同一零件测多次，读数怎么整理：平均值、实验标准偏差 s、平均值的标准偏差 s/√n，按 GUM 的公式，附卡尺五次读数算例（20.088 mm，s = 0.0228 mm，s/√5 = 0.0102 mm）。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/measurement-uncertainty/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-pin.webp https://kelibron.com/media/scenes/en/digital-pin.webpDigital caliper: Ø12 ±0.03 pinMeasurement uncertainty basics — An introduction to measurement uncertainty (GUM): error versus uncertainty, Type A from repeated readings, Type B from specifications and resolution, combined and expanded uncertainty with k = 2, worked for a caliper reading.https://kelibron.com/media/scenes/en/digital-pin.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/measurement-uncertainty/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-pin.webp https://kelibron.com/media/scenes/zh/digital-pin.webp数显卡尺测 Ø12 ±0.03 销测量不确定度入门 — 测量不确定度基础（GUM / JJF 1059.1）：误差与不确定度的区别，重复测量的 A 类评定，按规格和分辨力的 B 类评定，合成标准不确定度与 k = 2 扩展不确定度，附卡尺测量算例。https://kelibron.com/media/scenes/zh/digital-pin.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/uncertainty-budget-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftAn uncertainty budget for a caliper measurement — Build an uncertainty budget for a caliper measurement step by step, after NPL Good Practice Guide 40: repeatability, resolution, face flatness and parallelism, calibration specification; combined u = 0.017 mm (NPL rounds it to 0.018) and U = 0.035 mm (k = 2), and how the degrees of freedom of five readings affect k.https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/uncertainty-budget-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径卡尺测量的不确定度预算 — 按 NPL 第 40 号良好实践指南，一步步列出卡尺测量的不确定度预算：重复性、分辨力、测量面平面度与平行度、校准规格；合成标准不确定度 0.017 mm（NPL 舍入写作 0.018）、扩展不确定度 U = 0.035 mm（k = 2），以及只测五次时自由度怎样影响 k。https://kelibron.com/media/scenes/zh/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/decision-rules/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-reject.webp https://kelibron.com/media/scenes/en/shaft-reject.webpJudge an oversize shaft (rejected)Decision rules and guard bands — How measurement uncertainty enters a pass/fail decision, after JCGM 106: simple acceptance, guarded acceptance (acceptance limits w = U inside the tolerance), guarded rejection, consumer’s and producer’s risk, with a Ø20 0/−0.05 mm worked example.https://kelibron.com/media/scenes/en/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/decision-rules/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-reject.webp https://kelibron.com/media/scenes/zh/shaft-reject.webp判定超差的轴（不合格）判定规则与保护带 — 按 JCGM 106 讲测量不确定度怎样进入合格判定：简单接受、保护带接受（在公差内侧缩进 w = U 设验收极限）、保护带拒收，消费方风险与生产方风险，附 Ø20 0/−0.05 mm 算例。https://kelibron.com/media/scenes/zh/shaft-reject.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/tolerance/msa-gauge-rr/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-force.webp https://kelibron.com/media/scenes/en/error-force.webpWrong use: squeezing too hardGauge R&R and measurement system analysis (MSA) — Measurement system analysis in plain terms: bias, linearity, stability, repeatability and reproducibility; how to run a caliper gauge R&R study (parts, appraisers, trials) and how to read %GRR and the number of distinct categories.https://kelibron.com/media/scenes/en/error-force.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/tolerance/msa-gauge-rr/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-force.webp https://kelibron.com/media/scenes/zh/error-force.webp错误用法：测量力过大量具 GR&R 与测量系统分析（MSA） — 测量系统分析通俗讲解：偏倚、线性、稳定性、重复性与再现性；卡尺量具 GR&R 研究怎么做（零件、测量人、测量次数），%GRR 与可区分类别数 ndc 怎么判断。https://kelibron.com/media/scenes/zh/error-force.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/choosing-a-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-reading.webp https://kelibron.com/media/scenes/en/digital-reading.webpDigital caliper on a stepped shaft (readout view)How to choose a caliper — Compare calipers by objective specifications: measuring range and jaw length, vernier, dial or digital readout, resolution versus maximum permissible error, protection rating, materials, data output and the certificate supplied.https://kelibron.com/media/scenes/en/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/instruments/choosing-a-caliper/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-reading.webp https://kelibron.com/media/scenes/zh/digital-reading.webp数显卡尺测阶梯轴（读数视角）卡尺怎么选 — 按客观指标比较卡尺：测量范围与量爪长度，游标、带表还是数显，分辨力与最大允许误差的区别，防护等级，材料与结构，数据输出以及随附的证书，按工件公差和使用环境选型。https://kelibron.com/media/scenes/zh/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/caliper-care-calibration/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-zero-digital.webp https://kelibron.com/media/scenes/en/error-zero-digital.webpWrong use: digital caliper not set to ORIGINCaliper care and calibration — Keep a caliper accurate: clean and check zero before use, check the jaws against light, verify with gauge blocks across the range, check it against the maximum permissible error (ISO 13385-1 or your national procedure) at an interval your quality system sets, and store it correctly.https://kelibron.com/media/scenes/en/error-zero-digital.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/instruments/caliper-care-calibration/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-zero-digital.webp https://kelibron.com/media/scenes/zh/error-zero-digital.webp错误用法：数显卡尺未按 ORIGIN 归零卡尺保养与校准 — 卡尺怎样保持准确：使用前擦净、检查零位和透光，定期用量块在量程内多点校准，按 JJG 30 检定或按质量体系规定的周期校准（对照 ISO 13385-1 的最大允许误差），正确存放与保养。https://kelibron.com/media/scenes/zh/error-zero-digital.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/calibrating-with-gauge-blocks/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/digital-reading.webp https://kelibron.com/media/scenes/en/digital-reading.webpDigital caliper on a stepped shaft (readout view)Checking a caliper and a micrometer with gauge blocks — Check a caliper or micrometer against gauge blocks: five or more points over the range, parallelism near zero and full range, inside jaws, error = reading − block size, and why a pass against the MPE is verification, not calibration.https://kelibron.com/media/scenes/en/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/instruments/calibrating-with-gauge-blocks/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/digital-reading.webp https://kelibron.com/media/scenes/zh/digital-reading.webp数显卡尺测阶梯轴（读数视角）用量块核查卡尺和千分尺 — 用量块核查卡尺和千分尺：在量程内至少五个大致等距的点检查，在接近零位和满量程处查平行度，内测量爪怎么查，示值误差 = 读数 − 量块尺寸；附 NPL 的千分尺校准示例（U = ±0.002 mm，k = 2）。https://kelibron.com/media/scenes/zh/digital-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/reading-calibration-certificates/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-zero.webp https://kelibron.com/media/scenes/en/error-zero.webpWrong use: vernier zero not checkedHow to read a calibration certificate — Read a caliper calibration certificate: the error or correction at each point, U with its k (such as 0.012 mm, k = 2), and why it gives no pass or fail.https://kelibron.com/media/scenes/en/error-zero.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/instruments/reading-calibration-certificates/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-zero.webp https://kelibron.com/media/scenes/zh/error-zero.webp错误用法：游标卡尺未检查零位校准证书怎么看 — 卡尺、千分尺校准证书上写了什么：各校准点的示值误差或修正值、扩展不确定度 U 与包含因子 k（如 U = 0.012 mm，k = 2）、校准条件和溯源说明。修正值怎么用（119.98 mm 修正为 119.96 mm），为什么校准证书不给合格结论，以及存档前要核对的几项。https://kelibron.com/media/scenes/zh/error-zero.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/gauge-management/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/error-zero-digital.webp https://kelibron.com/media/scenes/en/error-zero-digital.webpWrong use: digital caliper not set to ORIGINGauge management and calibration records — Set up gauge control for a workshop or lab: an instrument register, calibration intervals, status labels, a calibration record template, and what to do when a gauge is found out of tolerance, with reference to ISO 9001:2015 clause 7.1.5 (since replaced by ISO 9001:2026) and ISO 10012.https://kelibron.com/media/scenes/en/error-zero-digital.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/instruments/gauge-management/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/error-zero-digital.webp https://kelibron.com/media/scenes/zh/error-zero-digital.webp错误用法：数显卡尺未按 ORIGIN 归零量具管理制度与校准记录 — 车间与实训室量具管理怎么做：量具台账、校准周期、状态标识（合格/准用/停用）、卡尺校准记录模板，以及发现量具超差后的处理，对照 ISO 9001:2015 第 7.1.5 条（已由 2026 版取代）与 ISO 10012。https://kelibron.com/media/scenes/zh/error-zero-digital.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/instruments/gauge-blocks/ 2026-10-16 monthly 0.8 https://kelibron.com/zh/guide/instruments/gauge-blocks/ 2026-10-16 monthly 0.8 https://kelibron.com/guide/training/teaching/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/vernier-reading.webp https://kelibron.com/media/scenes/en/vernier-reading.webpRead a vernier caliper on a Ø25 shaft (readout view)Teaching and training with KELIBRON — Use KELIBRON, a free online caliper simulator, to teach measurement: classroom demonstrations, pre-lab practice, remote lessons, physics length measurement, vocational machining and quality-inspection courses, apprentice and new-hire QC training, skills competitions.https://kelibron.com/media/scenes/en/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/training/teaching/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/vernier-reading.webp https://kelibron.com/media/scenes/zh/vernier-reading.webp在 Ø25 轴上读游标卡尺（读数视角）用 KELIBRON 做测量教学与培训 — 用免费的在线卡尺仿真实训室 KELIBRON 开展测量教学：课堂演示、实训课前预习、线上教学、高中物理长度测量、机械类专业“互换性与技术测量”等课程、质检员和车铣钳工岗前培训、技能大赛训练。https://kelibron.com/media/scenes/zh/vernier-reading.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/guide/training/skills-certification/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/en/shaft-outside.webp https://kelibron.com/media/scenes/en/shaft-outside.webpMeasure a Ø25 shaftMeasuring skills for certification and contests — What practical assessments for machinists, fitters and quality inspectors look for when you measure: instrument check and zero, clean faces, correct technique for outside, inside and depth, reading to the resolution, recording, pass/fail judgement and instrument care.https://kelibron.com/media/scenes/en/shaft-outside.mp452026-10-16T08:00:00+08:00yes https://kelibron.com/zh/guide/training/skills-certification/ 2026-10-16 monthly 0.8 https://kelibron.com/media/scenes/zh/shaft-outside.webp https://kelibron.com/media/scenes/zh/shaft-outside.webp测量 Ø25 轴外径考证与技能大赛的量具使用要点 — 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