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DeFelsko PosiTector RTR Check Shim is used to check peak height accuracy of the PosiTector RTR. Stated thickness is adjusted for Replica Tape Offset Value.

Accuracy: ± 1.25 microns (± 0.049 mils)

This shim set allows you to verify the the height (H, HL) accuracy of PosiTector RTR instrument in-house, and comes with a Certificate of Calibration traceable to PCB.