Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1994-11-25
1996-04-16
Fulton, Christopher W.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33347, 33DIG10, G01C 928
Patent
active
055070981
ABSTRACT:
An electricians tool is disclosed which comprises a body which houses a sliding arm. This arm engages in an electrical outlet box cover to hold the tool under spring pressure in the said cover. A horizontally disposed spirit level and a vertically disposed spirit level are used to align the electrical outlet box cover so that it may be fastened level.
REFERENCES:
patent: D298421 (1988-11-01), Tyroff
patent: 2813349 (1957-11-01), Harris
patent: 3116563 (1964-01-01), Gelbman
patent: 3230632 (1966-01-01), Redding
patent: 3277579 (1966-10-01), Murphy
patent: 3279080 (1966-10-01), Stepshinski
patent: 3603000 (1971-09-01), Ostrager
patent: 4126944 (1978-11-01), Burkhart
patent: 4888880 (1989-12-01), Parker
patent: 5111593 (1992-05-01), Gehen, Sr.
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