North Coast Stainless Steel 180 Degree Goniometer

North Coast Stainless Steel 180 Degree Goniometer is durable, easy to read and made of stainless steel. The 7" (18cm) model has one 180° scale marked in 5° increments while 14" (36cm) model has two 180° scales marked in 1° increments that read in either direction. Linear measurements are in inches and centimeters.