Mitutoyo 177-281 Setting Ring Gage, Imperial, 0.275 in, 0.98 in OD, 0.28 in THK, +/-0.00006 in, Steel

A Mitutoyo steel calibration artefact for quick and accurate setting of dial bore gauges, Holtest gauges, and inside micrometers. The actual calibration value for the diameter is marked on each ring.

Mitutoyo 177-281 0.27500 in ID | 0.98000 in OD | 7.00000 in Thick | ± 0.00006 in | Setting Rings & Set