Densitometer

Details Densitometer Densitometer

1985-08-08

1987-02-24

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

356446, G01J 351, G01N 2147

Patent

active

046453504

ABSTRACT:
A densitometer is described which is equipped with an extendable and retractable measuring head driven by an electric motor. In the retracted rest position, a measuring diaphragm is visible to the user and the instrument may be positioned. In the extended working position the measuring head covers the measuring diaphragm. By means of the electric drive of the measuring head, the risk of erroneous positioning is avoided.

REFERENCES:
patent: 3734630 (1973-05-01), McIntosh et al.
patent: 3771877 (1973-11-01), Rosencranz
patent: 4053235 (1977-10-01), Hampton et al.

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