• Transparent, high-impact vinyl

Large International Standard Goniometer has three rows of numbers. Outer row measures 0º to 90º, middle 0º to 180º, inner 0º to 360º, all in 1º increments. Transparent, high-impact vinyl. 12-1/2"L.

Medium International Standard Goniometer has two rows of numbers. Outer row measures 0° to 180° in 1° increments, inner measures 0° to 60° in 10° increments. Transparent plastic. 8"L.