Fowler 52-470-160-0, 1 - 10 Pitch Range Acme Inch Thread Gage

Features This gage is a standard for grinding & setting tools when cutting Acme threads. 29 degree pitch. Range of pitch: 1-10 (1, 1-1/2, 2, 3, 4, 5, 6, 7, 8, 9, 10) Acme threads have the same depth as square threads, but the sides of the thread are at an inclination of 14-1/2 degrees (29 degrees included angle). Angles & edges hardened and ground.