Level vial with extender pitch range

Details Level vial with extender pitch range Level vial with extender pitch range

1982-07-19

1991-04-02

Little, Willis

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33389, G01C 924

Patent

active

050036998

ABSTRACT:
A level vial for use in connection with a level instrument for determining angular relationships wherein the geometry of the internal vial components and, in particular, the bore and core surfaces co-act with the bubble to produce a level vial having an increased radius of curvature while maintaining standard sensitivity and having the capability of providing a visual measure of a relatively wide range of angular deflections from horizontal.

REFERENCES:
patent: 771803 (1904-10-01), Bishop
patent: 1654248 (1927-12-01), Erdmann
patent: 3383772 (1968-05-01), Gardner et al.
patent: 3842514 (1974-10-01), Scheyer
patent: 3871109 (1975-03-01), Vaida
patent: 4347088 (1982-08-01), Jacquet

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