Test Indicators
Product Features:
- Available in horizontal and vertical models
- Available with 1.0″ or 1.5″ dial diameters with a wide range of contact point lengths
- Available in .001″, .0005″, .0001″ or .00005″ graduations
- Metric equivalents available
- Contact points available in steel, carbide, ruby, teflon and nylon
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.
Manufacturers:
Brown & Sharpe
Compac
Diatest
Fowler (Fred V. Fowler Co.)
Interapid
Mitutoyo
SPI (Swiss Precision Instruments)
Starrett
Sylvac