General Tools 251 4 - 84 Screw Pitch Gage

The #251 Screw Pitch Gage, U.S. Sizes can gage V, American National and U.S. standard 60°threads.

Features

• Notched for measuring inside threads of small holes and nuts, as well as external threads
• Knurled thumb nuts lock case open or closed
• Sizes covered: All pipe thread sizes from 4 to 84