Big Horn 19212 Screw Pitch Gauge 4-42 TPI, 28 Leaves, 60 Degree Threads

Big Horn 19212 4-42 TPI, 28 Leaves, 60 Degree Threads Screw Pitch Gage. Thread pitch size is stamped on each gauge. Our screw pitch gauge are among the most useful tools in any mechanics' tool box. They quickly determine the pitch of various threads. Locking device at both ends to securely lock the leaves.