Setting Ring 12" 177-313 CAL4 B15 and a solid metal base

and a solid metal base contains a storage pocket and holes for bench mounting

Interchangeable anvils: 5

With Output 293-255-30

UKAS Calibration - CAL16 B1

Setting Ring 12" 177-313 CAL4 B15 and a solid metal baseThe Mitutoyo 177 313 Steel Setting Ring has the following specifications: Type: B Nominal Size: 12 Tolerance Between Nominal and Actual Diameter: + . 0008 Uncertainty of Marked Diameter Value: + . 0001 Roundness Cylindricity: . 00012 Distance from the Side Face (H): 5. 00mm Side of Warranted Calibration Surface (K): 28. 10mm Outside Diameter: 438. 00mm E Dimension for Type B: 340. 00mm Thickness: 38. 1m 25. 4mm