Top-view-reading level

Details Top-view-reading level Top-view-reading level

1983-04-07

1985-01-08

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 928

Patent

active

044920385

ABSTRACT:
A level having an I-shaped frame with a web flanges and a lateral opening in the web. A vial assembly is disposed in the lateral opening for viewing the bubble of the vial. A window opening is formed in at least one flange. Overlying the vial assembly is a transparent window element which is a part of a level vial support for viewing the bubble through the window opening and through the window element. The window element protects the vial from foreign material and from mechanical damage.

REFERENCES:
patent: 3835549 (1974-09-01), De Jong et al.
patent: 4011660 (1977-03-01), Johnson
patent: 4208803 (1980-06-01), Brown et al.

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