The Mitutoyo 177-308 Steel Setting Ring has the following specifications:
- Type: B
- Nominal Size: 250mm
- Tolerance Between Nominal and Actual Diameter: +/- .02mm
- Uncertainty of Marked Diameter Value: +/- .0025mm
- Roundness/Cylindricity: .003mm
- Distance from the Side Face (H): 5.3mm
- Side of Warranted Calibration Surface (K): 27.7mm
- Outside Diameter: 362mm
- E Dimension for Type B: 290mm
- Thickness: 38.1mm/25.4mm
