Centralizing countersink gauge

Geometrical instruments – Distance measuring – Single contact with a work engaging support

Patent

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Details

33531, 33833, 33542, G01B 332

Patent

active

049053787

ABSTRACT:
Disclosed is a measuring device for determining both absolute and comparative depths of the countersunk portions of countersunk holes drilled in a workpiece, the measuring device being capable of centering itself within a hole being measured so that repetitive measurements can be made early and accurately; further the measuring device is capable of measuring the depth of a countersunk hole through a template.

REFERENCES:
patent: 1617485 (1927-02-01), Hughes
patent: 1768639 (1930-07-01), Shore et al.
patent: 2514794 (1950-07-01), Prince
patent: 2632955 (1953-03-01), Samuelson
patent: 2642670 (1953-06-01), Dow
patent: 2741032 (1956-04-01), Emery
patent: 2758382 (1956-08-01), Hurd
patent: 3109243 (1963-11-01), McCormick
patent: 3162953 (1964-12-01), Porter
patent: 3352021 (1967-11-01), Leach et al.
patent: 3936945 (1976-02-01), Jevremov
patent: 4139947 (1979-02-01), Possati

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