Certified plastic precision wedge

These plastic shims are used to calibrate thickness gauges on ferrous or non-ferrous metal substrates. They can be used to calibrate the measurement on the actual test substrate. ■ Traceable to NIST or BAM standard ■ Used in compliance with ISO standards 9 different thicknesses are available, the thickness in microns is shown on each shim. An individual serial number is also indicated on each shim to ensure accuracy within +/- 5%.