Starrett gauge, 6-60 TPI, screw pitch, 60 degree, 30 leaves

Description

The Starrett 473 Screw Pitch Gage includes a substantial steel case with a number of folding leaves at both ends.
The product features 30 leaves, 6-60 TPI range, with positive stop and 11-1/2 and 27 Pipe thread pitches.