Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1992-02-14
1992-11-24
Haroian, Harry N.
Geometrical instruments
Straight-line light ray type
Structurally installed
124 87, F41G 1467
Patent
active
051651785
ABSTRACT:
A sight apparatus includes a mounting plate, with the mounting plate including a plurality of U-shaped loops mounted thereto, with the second of the U-shaped loops including spaced parallel grooves coextensive therewith to secure crossed spring lines that are repositionable along their ends relative to the grooves for adjustment of the lines relative to a sighting procedure.
REFERENCES:
patent: 3136063 (1964-06-01), Stebbins
patent: 4999919 (1991-03-01), Sparkman
Gilden Leon
Haroian Harry N.
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