32mm Set Ring Standard

Description

Condition

Used (Excellent / Well Maintained).

This setting ring is in excellent used condition. It has been well-maintained and kept heavily lubricated to prevent oxidation, ensuring the measuring surface remains pristine. The gauge face is engraved with “±0”, indicating that at the time of manufacture/inspection, it measured exactly to its nominal size with no deviation.

Product Overview

This 32mm Master Setting Ring is a high-precision calibration standard designed for zero-setting internal measuring instruments, such as Holtests (3-point micrometers), inside micrometers, and bore gauges. Precision-ground and lapped to a mirror finish, it serves as the reference “truth” for your workshop. With a nominal size of exactly 32.000mm and a stated accuracy of 0.5µm (0.0005mm), this ring allows for sub-micron calibration, ensuring your bore measurements are traceable and accurate. The “±0” engraving signifies that the actual dimension matches the nominal dimension perfectly within the tolerance grade, eliminating the need to calculate offsets when setting your tools.

Brand Information

Issoku (Dai-ichi Sokuhan Works Co., Ltd.) is a premier Japanese manufacturer of precision gauges, established in 1944. While sometimes less marketed globally than Mitutoyo, Issoku is widely revered in the metrology sector for producing thread gauges and master rings of exceptional hardness and geometric stability. Their gauges are a staple in Japanese automotive and aerospace manufacturing, known for retaining their dimensional accuracy over decades of use.

Specifications

Keywords

Issoku, Dai-ichi Sokuhan, 32mm setting ring, master ring gauge, calibration ring, bore gauge setting, zero set ring, 32.000mm, Japanese metrology, precision grinding.