Starrett Screw Pitch Gauge
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.
Whitworth standard – 55° threads
No. of leaves: 30
TPI range: 3 1/2 – 60
With positive stop.
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