British Standard Ring Stick with Wooden Handle

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.

K&B Diamond and Stone Gauge. Measures loose or mounted stones from 3 points to 4 carats. Birthstone chart on reverse.

Measures in MM and 41 - 76 European Standard.