6 Screw Pitch Gauge tpi 4-42
Screw Pitch Gauges quickly determine the pitch of various external and internal threads. These gauges consist of a substantial steel case with a number of folding leaves at both ends, each leaf having teeth corresponding to a definite pitch.
American National - 60° Threads
No. of leaves: 30
TPI Range: 4 - 42
Locking Device.