Optics: measuring and testing – Angle measuring or angular axial alignment – Alignment of axes nominally coaxial
Patent
1985-11-05
1987-06-30
LaRoche, Eugene R.
Optics: measuring and testing
Angle measuring or angular axial alignment
Alignment of axes nominally coaxial
356154, 33286, G01B 1127
Patent
active
046766367
ABSTRACT:
An alignment aid for use in installing a reference system of known type which reflects an image of an indicator mark mounted on a gun turret, back into the gun sight via a mirror mounted at the muzzle end of the gun barrel, for comparison with a reference mark on the graticule of the gunsight, thereby to indicate any angular deviation between the muzzle axis and the gunner's line of sight. The alignment aid, which is used in setting the mirror to provide initial coincidence between the indicator mark image and the reference mark, consists of a highly reflective viewing screen attachable to the turret adjacent the indicator mark, and a projection lamp attached to the gun sight so as to protect an image of the reference mark onto the screen, via the telescopic optics of the gunsight and the mirror.
REFERENCES:
patent: 3684383 (1972-08-01), Johansson
patent: 4142799 (1979-03-01), Barton
Bridges John A.
Young Kenneth E.
LaRoche Eugene R.
Mottola Steven J.
The Secretary of State for Defence in Her Britannic Majesty's Go
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