Test Indicators

Description:

Closely related to (but distinct from) dial indicators, test indicators are generally used for layout work on surface plates and part setup during the machining process. Test indicators excel at providing consistency measurements and are most often used to explore relatively broad part surfaces in either one or two dimensions. When combined with a V block or a pair of centers, test indicators can be used to test for roundness or runout on cylindrical parts. Typical resolution for test indicators is 0.0001 to 0.00005 inch with measurement range being between ±0.004 and ±0.015 inch.