Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1997-09-10
1999-08-24
Bennett, G. Bradley
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33350, G01C 928
Patent
active
059409789
ABSTRACT:
The improved builder's level is used by carpenters, masons and the like for determining parallelism or perpendicularity with respect to a horizontal plane. The level has opposed depressed channels extending along its length, thereby permitting the level to be more securely gripped. The body of the level has interior ridges and an interior web for reinforcement and to properly position liquid-containing vials in such body.
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Coel Joseph B.
Wright Randall J.
Bennett G. Bradley
Empire Level Mfg. Corp.
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