Geometrical instruments – Straight-line light ray type – Level
Patent
1979-12-10
1982-06-08
Stephan, Steven L.
Geometrical instruments
Straight-line light ray type
Level
33299, G01C 500
Patent
active
043332447
ABSTRACT:
A level and support made up of two spaced tripods each having a bracket supporting one end of the level. Each bracket has a rifle sight on it which can be aligned with the other end on a distant object to establish the level thereof. In a separate embodiment a single level has a double bracket arrangement on it with two clamps each having a rifle sight which can be sighted onto distant objects.
REFERENCES:
patent: 212405 (1879-02-01), Saegmuller
patent: 527815 (1894-10-01), Schnell
patent: 761219 (1904-05-01), Goodwin
patent: 861011 (1907-07-01), Ahlerg
patent: 928600 (1909-07-01), Greene
patent: 1270074 (1918-06-01), Veenstra
patent: 1274696 (1918-08-01), DeFay
patent: 2407960 (1946-09-01), Mariotti
Lovercheck Charles L.
Stephan Steven L.
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