General 251 Screw Pitch Gage, U.S. Sizes
The 251 Screw Pitch Gage, U.S. Sizes can gage V, American National and U.S. standard 60� threads.
FeaturesNotched for measuring inside threads of small holes and nuts, as well as external threads Knurled thumb nuts lock case open or closed
SpecificationsSizes covered: All pipe thread sizes from 4 to 84
IncludedSet of 51 gages