David J O'Connor

US Patent:

D3484769, Jul 5, 1994

Filed:

Nov 2, 1992

Appl. No.:

D/001069

Inventors:

David O'Connor - Bethpage NY

US Classification:

D17 22

US Patent:

41388208, Feb 13, 1979

Filed:

Nov 16, 1976

Appl. No.:

5/742512

Inventors:

David O'Connor - Warwick NY

International Classification:

G01B 334

US Classification:

33168R

Abstract:

A metric gauge including a planar body having formed therein a plurality of varying sized sockets suitable for measuring wrench size, screw size, and nut size. A scale with offset index shoulder is also provided to measure bolt and screw length. Each of the sockets is hexagonally or otherwise formed at the planar body to receive a bolt head or nut therein to precisely measure wrench size. A seat or shoulder for the bolt head or nut is formed below the planar surface at each socket to rest the bolt head or the nut thereon when sizing. Each of the sockets is downwardly formed to a hollow cylindrical configuration of a varying diameters for bolt diameter measuring purposes. Each socket terminates downwardly in a cylindrical bottom of known outside diameter to receive thereon a nut for gauging the nut diameter. The scale edge of the planar surface is impressed with a plurality of graduations which may be in millimeters or inches which extend from the index shoulder.