KELIBRON Digital caliper: outside diameter of Shaft Ø20 — inspect
Digital caliper: outside diameter of Shaft Ø20 — inspect: a 28-second reenactment recorded in the KELIBRON 3D lab, with English captions. The steps below are the captions in order, and you can do the same measurement yourself in the lab.
What happens in the video
- 0:00 Digital caliper: outside diameter of Shaft Ø20 — inspect
- 0:04 Close the jaws fully and press ORIGIN: the display reads 0.00.
- 0:09 Open the jaws and set Shaft Ø20 — inspect deep between them, square to its axis.
- 0:13 Close the moving jaw gently until both faces touch.
- 0:18 Read: 20.07 mm, outside 19.95–20.00 mm. The part is rejected.
In the course
- Part inspection in practice · Inspection records and reports — Record results so that someone else can trace and check them.
- Measurement data, uncertainty and decisions · Decision rules and guard bands — Decide pass or fail with a stated decision rule.
Read the guide
Measuring methodsInspection records and reportsAn inspection record lets someone who was not there see what was checked, with what, and what was decided.- Tolerances and decisionsDecision rules and guard bandsA decision rule states how measurement uncertainty is used to accept or reject a part, and is best agreed before the measurement.