Device for automatically measuring thickness of coatings on a su

Details Device for automatically measuring thickness of coatings on a su Device for automatically measuring thickness of coatings on a su

1979-12-19

1983-08-23

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

G01B 710, G01R 3312

Patent

active

044006659

ABSTRACT:
Instrument for measuring thickness of coatings on substrate based on space-dependent, electromagnetic interaction between a measuring probe resting against the coating and the substrate comprising a compensating probe, a comparison body with properties similar to that of the substrate, a mechanism for adjusting the spacing of the compensating probe from the comparison body, until the same electromagnetic interaction is obtained as for the measuring probe and the substrate and a device for displaying the spacing between the compensating probe and comparison body.

REFERENCES:
patent: 2927455 (1960-03-01), Outterson
patent: 3441840 (1969-04-01), Randle
patent: 3662576 (1972-05-01), Girlatschek
patent: 3746988 (1973-07-01), Ford et al.

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