2 guides
Instrument care
Daily checks, calibration with gauge blocks, registers, labels and records.
2 min readCaliper care and calibrationBefore each use: clean the faces, close the jaws and check zero.
1 min readGauge management and calibration recordsEvery instrument used to accept product needs a unique number, a register entry, a calibration interval, a visible status and a record of each calibration.
Browse by topic
Reading calipers
How vernier, dial and digital calipers are read, with worked examples — the place to start.
Measuring methods
Outside, bore, depth, steps and centre distances on real parts, and the mistakes that spoil a reading.
Tolerances and decisions
Limits and fits, choosing an instrument for the tolerance, and how uncertainty affects pass or fail.
Teaching and certification
Using the lab in class and in company training, and what practical assessments check.