Thread gauge for measuring thread pitch diameters

Patent · Tue Nov 19 00:00:00 EST 1985

OSTI ID:7001499

Brewster, A L

A thread gauge which attaches to a vernier caliper to measure the thread pitch diameter of both externally threaded and internally threaded parts is disclosed. 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. 2 figs.

• DOE Contract Number: AC04-76DP00613
• Assignee: PTO; EDB-94-125580
• Patent Number(s): US 4553337; A
• Application Number: PPN: US 6-568837
• OSTI ID: 7001499
• Resource Relation: Patent File Date: 6 Jan 1984
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
MACHINE PARTS
DIMENSIONS
MEASURING INSTRUMENTS
DESIGN
FASTENERS
THREADED JOINTS
JOINTS
440800* - Miscellaneous Instrumentation- (1990-)