Metrology & Quality Control
Tolerances, fits, measuring instruments, GD&T and measurement uncertainty.
Articles
Clearance, Transition and Interference FitsHow the limits of a hole and a shaft decide whether they slide, locate or press together.Metrology & Quality ControlGD&T Symbols and TermsReference chart of the geometric tolerance symbols, datums and feature control frames.Metrology & Quality ControlLeast CountThe smallest change in size that a measuring instrument can show.Metrology & Quality ControlLimits of Size and ToleranceThe largest and smallest acceptable sizes of a feature, and the tolerance between them.Metrology & Quality ControlMeasurement UncertaintyThe quantified doubt about a measurement result, combined from all its sources.Metrology & Quality Control