Level

Details Level Level

1979-12-14

1985-03-12

Phillips, Charles E.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33376, G01C 924

Patent

active

045036233

ABSTRACT:
A plurality of blocks are removably held between a pair of elongated straight frame members, the majority of the blocks carrying a spirit vial therein. The frame members are held together by either a plurality of springs connected there between or by interconnection with the blocks. The arrangement of the blocks and the number thereof may be easily changed and selected at will. A pair of corner blocks may also be carried by said frame members adjacent the ends thereof.

REFERENCES:
patent: 1393338 (1921-10-01), Bedortha
patent: 1640167 (1927-08-01), White et al.
patent: 1690053 (1928-10-01), Charlton
patent: 1712201 (1929-05-01), Deneen
patent: 1777429 (1930-10-01), Charlton
patent: 2038531 (1936-04-01), Bassett et al.
patent: 2057404 (1936-10-01), Wahlstrom et al.
patent: 2624953 (1953-01-01), Newcomb

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