Adjustable plumb/level

Details Adjustable plumb/level Adjustable plumb/level

1991-09-26

1992-05-12

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 928

Patent

active

051115891

ABSTRACT:
An adjustable plumb level formed from an I beam with wood side panels. A circular hole is formed through the I beam and side panels, within which an indicating mechanism is disposed. The indicating mechanism is easily replaceable so that the present invention can be used as a plumb or a level.

REFERENCES:
patent: 288624 (1883-11-01), Davis
patent: 516024 (1894-03-01), Schaeffer
patent: 908406 (1908-12-01), Henderson
patent: 1380611 (1921-06-01), Walker
patent: 1703006 (1926-07-01), Jay
patent: 1765060 (1930-06-01), DeAngelis
patent: 1815949 (1931-07-01), Marischal
patent: 2102364 (1937-12-01), Langsner
patent: 4335524 (1982-06-01), Schimming
patent: 4876798 (1989-10-01), Zimmerman
patent: 4979310 (1990-12-01), Wright

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