10-728-4 Setting Ring .650"
Master Setting Ring
For comparative gaging, calibration and the setting of internal measuring tools.
- 0.650" Size
- + 0.00006" Accuracy
- 0.000019" Taper / Ovality
- Made from oil hardened non-shrinking steel
- Hardened and tempered to 62 RC
- Actual dimensions duly etched
- Cryogenic treatment for long-term dimensional stability
- Calibrated at 20º C under standards room conditions