Magnetic thickness gauge having convertible scales

Details Magnetic thickness gauge having convertible scales Magnetic thickness gauge having convertible scales

1976-08-30

1978-11-14

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

G01R 3312

Patent

active

041258070

ABSTRACT:
A thickness gauge for measuring the thickness of a layer applied to a ferromagnetic base by measuring the attractive force of a permanent magnet in contact with the applied layer is provided with easily removable, interchangeable scales to permit direct reading of thickness in terms of metric, English or other units, or in accordance with the characteristics of the particular magnet used in the gauge.

REFERENCES:
patent: 2528640 (1950-11-01), Coleman
patent: 3521160 (1970-07-01), Nix et al.
patent: 3638119 (1972-01-01), Mackenzie
patent: 3716779 (1973-02-01), Akulov
American Instrument Company, Inc., Wash., D.C., Bulletin 2253; Your Coating Thickness, Jan. 1955, (9 pages).
Bennett, R. S., A Review of Methods for Coating-Thickness Determination; Jour. of Scien. Inst., vol. 26, 1949 (pp. 209-215).

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