INSIZE 4806-20 Angle Gauge 1-45 Degrees

The INSIZE 4806-20 is a stainless steel angle gauge made as a folding set of 20 leaves, each ground to a different angle from 1° to 45°: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40 and 45 degrees. INSIZE states an accuracy of ±30 minutes of arc across the set. The leaves fan open around a central rivet, so you pick the leaf that matches the angle on a workpiece and read it off directly. INSIZE markets it for checking complementary angles, useful when setting up machine tools or checking a finished bevel.