Geometrical instruments – Straight-line light ray type – Aerial bomb sight
Patent
1993-07-15
1995-08-22
Wirthlin, Alvin
Geometrical instruments
Straight-line light ray type
Aerial bomb sight
33245, 33286, 33298, F41G 154
Patent
active
054428602
ABSTRACT:
A device for aiding in the cross-hair alignment of the reticle of a gun-mounted telescopic sight wherein the gun includes at least one mounting boss for securing the telescopic sight. The device includes a card having a viewing surface and a contact edge and at least one reference line located on the viewing surface and also aligned "true" with the contact edge. The contact edge of the card is adapted to be positioned in an abutting relationship with the mounting boss of the gun, independent of the telescopic sight so that the reference line on the card automatically aligns with the barrel axis and so that the viewing surface of the card lies adjacent to the reticle. The relative position of the card abutted onto the mounting boss allows the sighting hairline of the reticle to be compared with the reference line and properly adjusted.
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Ken's Gun Room Catalog, p. 316, Summer, 1991.
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