Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1980-02-21
1981-10-06
Phillips, Charles E.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
G01C 928
Patent
active
042927412
ABSTRACT:
A holder for the setting of a level vial on the web of extruded or molded spirit levels, which comprises a base plate, the back wall of which is fixed to the level web, said base plate extending upwards along its edges through two symetrical parallel branches, the ends of which presenting a transversal perimeter whose center is set over relating to the plane of the base plate, said perimeter being provided with support means and said base plate being provided with means for locking the holder to the level web.
REFERENCES:
patent: 1689982 (1928-10-01), Vogel
Phillips Charles E.
Stanley Mabo S.A.
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