Engineer's Protractor Scale
For accurate conversions when using tenths or metric measurements. This
transparent, thin edged plastic scale is imprinted with millimeters
along the top of the scale and tenths of an inch graduations along the
bottom. Includes an imprinted 10 x 10 grid pattern. Protractor is
graduated from 0 degrees to 180 degrees and 180 degrees to 0 degrees in
one degree increments. Size 6 x 1-1\2 inches. Shipping weight 8 oz.