Thread gauge for measuring thread pitch diameters

Details Thread gauge for measuring thread pitch diameters Thread gauge for measuring thread pitch diameters

1984-01-06

1985-11-19

Little, Willis

Geometrical instruments

Gauge

Screw thread

33147M, G01B 340

Patent

active

045533377

ABSTRACT:
A thread gauge which attaches to a vernier caliper to measure the thread pitch diameter of both externally threaded and internally threaded parts. A pair of anvils are externally threaded with threads having the same pitch as those of the threaded part. Each anvil is mounted on a stem having a ball on which the anvil can rotate to properly mate with the parts to which the anvils are applied. The stems are detachably secured to the caliper blades by attachment collars having keyhole openings for receiving the stems and caliper blades. A set screw is used to secure each collar on its caliper blade.

REFERENCES:
patent: 2941304 (1960-06-01), Man

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