Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1993-12-07
1995-08-29
Wirthlin, Alvin
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33387, 33390, G01C 920
Patent
active
054449189
ABSTRACT:
An arrangement for aligning an apparatus unit with respect to the direction of gravity. The arrangement includes a first support device, a second support device and a third support device acting on a first support point, a second support point, and a third support point, respectively, of the apparatus unit. A measuring level serves to control the alignment of the apparatus unit. The first and second support devices are vertically adjustable. The three support points are arranged in the corners of a triangle. Two separate optically distinguishable partial areas are marked in the region of the measuring level, wherein the first partial area is intersected by a plane through the center of the measuring level extending perpendicularly to the line connecting the first support point and the third support point, and wherein the second partial area is intersected by a plane through the center of the measuring level extending perpendicularly to the line connecting the second support point and the third support point.
REFERENCES:
patent: 4848003 (1989-07-01), Westphal et al.
patent: 5025568 (1991-06-01), Grimes
Kueffner Friedrich
Mettler-Toledo AG
Wirthlin Alvin
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