Plug and pin gauges are used to compare hole and slot dimensions or locations to specific tolerances.

Dimensional gages and instruments provide quantitative measurements of product or component dimensional and form attributes such as wall thickness, depth, height, length, inner diameter (ID), outer diameter (OD), taper or bore

Thread gages are dimensional instruments for measuring and/or verifying thread size, pitch or other parameters

Masters and setting gages provide dimensional standards for calibrating other gages

Bore and ID gages are designed for internal diameter dimensional measurement or assessment

Air gages use pneumatic pressure and flow to measure or sort dimensional attributes

Calibration standards and reference sources include any source that can provide a reference for the calibration of an instrument or comparison of a material or component.