The newest member of the True-Size family has arrived! From the manufacturers of the True-Size Ring Set, the Bangle Gauge is a great addition for obtaining accurate sizes of bangles. Made of solid aluminum, the True-Size Bangle Gauge will measure precisely the inside circumference (6.67" – 9.42") as well as the inside diameter (2.125" – 3.0") of bangles. Also marked accordingly in millimeter sizes. Sits flush on any flat surface with a felt bottom not to scratch your jewelry counter top.