British Standard Plastic Ring Gauge Set of 26, Rings A-Z

With measurements in mm and inches.

Nickel plated steel with roller adjustment. One edge is graduated in inches reading ½” in ½” in 1/16” divisions and other edge in metric scale from 0 to 120mm in 1mm divisions.

Carbide tipped measuring faces parallel, ground and lapped. Stainless steel spindle for rust prevention, heat resistant grips and calibration is laser etched.