Offset indicator extension

Details Offset indicator extension Offset indicator extension

1982-02-01

1983-12-06

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

G01B 322

Patent

active

044184760

ABSTRACT:
An extension is provided for use with a basic offset indicator tool so as to permit locating the center of deep holes, the center of hard to get at holes, or surface irregularities in hard to get at areas. The extension includes a mounting portion for receiving a dovetail mounting plate on the indicator tool itself. A linking member pivotable at its midpoint within the extension housing engages at its upper end a needle of the basic offset indicator tool. The lower end of the pivotable linking member engages a pivotable lever which is frictionally coupled to another needle. This second needle, the lever, and the needle of the basic tool are all of substantially the same length.

REFERENCES:
patent: 2231805 (1941-02-01), Freitas
patent: 2383272 (1945-08-01), Page
patent: 2649783 (1953-08-01), Baugh
patent: 2898686 (1959-08-01), Croshier et al.
patent: 2984911 (1961-05-01), Hagar
patent: 2994961 (1961-08-01), Nakagawa
patent: 3079693 (1963-03-01), Miner, Jr.
patent: 3464118 (1969-09-01), Nagata

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