Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1977-01-27
1980-07-29
Haroian, Harry N.
Geometrical instruments
Straight-line light ray type
Multisight line
350 10, F41G 132
Patent
active
042143713
ABSTRACT:
A mirror, or mirrors, or other devices, placed in the vicinity of the reticle, or reticles, to reflect, or refract light coming in, or onto, the objective lens of the instrument, and then onto the reticle, or reticles, in such a manner as to illuminate the reticle, or reticles.
REFERENCES:
patent: 803969 (1905-11-01), Bassell et al.
patent: 1982058 (1934-11-01), King
patent: 2891437 (1959-06-01), Tripp
patent: 3064526 (1962-11-01), Lindsay
patent: 3121163 (1964-02-01), Rickert
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