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GNL 251
51-BLADES(4-84) SCREW PITCH GAUGES
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
SPECIFICATIONS:
Sizes covered: All pipe thread sizes from 4 to 84