Reticle and telescopic gunsight system

Details Reticle and telescopic gunsight system Reticle and telescopic gunsight system

1974-01-28

1976-04-06

Smith, Alfred E.

Optics: measuring and testing

Range or remote distance finding

External basis type

33245, 350 10, G01C 320

Patent

active

039485870

ABSTRACT:
Disclosed are telescopic gunsights for aiding shooters to achieve proper "hold-over" when shooting at targets of estimatable heights at long ranges. The reticles in the preferred telescopic gunsights comprise two or more superjacent target-spanning and aiming apertures of differing heights. By comparing the height of a target image viewed through the sight to the height of one or more of the apertures, the shooter can determine the aiming sight picture which produces the hold-over necessary to strike the target. Using the preferred variable power scopes of this invention the shooter can rapidly make adjustments so that the scope will be "calibrated" for any one of a plurality of target heights and/or trajectories, and for trajectory variations caused by altitude and ambient temperature variations and for angles of fire differing substantially from horizontal.

REFERENCES:
patent: 3392450 (1968-07-01), Herter et al.
patent: 3782822 (1974-01-01), Spence

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