Ring Strip Gauge

Gauge will measure diameter and circumference in mm and inches.
Hollow cavity to store work tools like files, tweezers, gauges, etc.

Battery operated and provides accurate sizing 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.

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