Artillery collimator symbol plate

Details Artillery collimator symbol plate Artillery collimator symbol plate

1978-05-01

1980-06-03

Corbin, John K.

Optics: measuring and testing

Fiducial instruments

33297, G01C 902

Patent

active

042059160

ABSTRACT:
A symbol plate for an artillery collimator and an artillery gun sight has a vertical center line across the plate and symbols arranged in a row symmetrically in relation to the center line. The symbols are formed of digits which are arranged to indicate numeral values proportionally variable with the distance to the center line, the digits being arranged with opposite inclination on opposite sides of the center line.

REFERENCES:
patent: 2450712 (1948-10-01), Brown
patent: 3752591 (1973-08-01), Feldman

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