Compass

Details Compass Compass

1974-09-09

1976-04-13

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33355R, G01C 1708

Patent

active

039494837

ABSTRACT:
Spatially adaptable support means for orienting the compass card immersed in damping fluid within a spherical housing of a magnetic compass to a horizontal plane during installation in any given mounting surface, comprising a movable compass card support unit and means for adjustably selectively positioning the support unit relative to the mounting plane and the sphere thereby positioning the card in its horizontal plane.

REFERENCES:
patent: 3261103 (1966-07-01), Bosland et al.
patent: 3473234 (1969-10-01), Kjellstrom et al.

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