HORIZON-INDICATOR FOR OPTICAL INSTRUMENTS Russian patent published in 1994 - IPC

Abstract RU 2010159 C1

FIELD: instrument engineering. SUBSTANCE: horizon-indicator is made like special shaped glass cuvette with optically transparent liquid filling. Liquid level being placed in vision area is depending on sloping angle of instrument positioning up and down with respect to sight direction. EFFECT: more simple construction. 5 dwg

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RU 2 010 159 C1

Authors

Sokolov B.I.

Sokolova O.I.

Sokolov N.B.

Sokolov A.B.

Dates

1994-03-30—Published

1991-06-28—Filed