Thread Pitch Gage 29 Degree ACME With 15 Blades

29 Degree Acme Screw Thread Pitch Gage
15 Blades
Made of hardened and precision ground tool steel.
Pitch number is marked on each blade.
Threads included are: 1, 1-1/3, 1-1/2, 1-3/4, 2, 2-1/2, 3, 3-1/2, 4, 5, 6, 7, 8, 9 & 10
Blades are 3″ long.