INSIZE 4820-330 螺距规 (4-42TPI, Whitworth 55°)

Range: 4-42TPI

Pitch of leaves included: 4, 4-1/2, 5, 5-1/2, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18,

                                       19, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42TPI

Quantity of leaves: 30

Check the pitch of screw thread

Made of medium carbon steel

Datasheet