What are the measurement accuracy and repeatability?

One-click flash measuring devices typically achieve micron-level positioning accuracy, but repeatability matters more because it determines whether the equipment can hold your tolerance band reliably. A practical rule is that repeatability should be better than one fifth of the tolerance band, and one tenth for critical characteristics, with margin left for temperature, fixturing and surface condition. Accuracy figures only mean something when tied to measuring range, ambient temperature and calibration method; a single unqualified number is misleading. In the technical agreement we state the accuracy and repeatability for your working conditions and define the acceptance method.