Level straight-edge apparatus and method of construction

Details Level straight-edge apparatus and method of construction Level straight-edge apparatus and method of construction

1992-10-05

1994-01-18

Will, Thomas B.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33382, 33451, 33485, G01C 928

Patent

active

052790410

ABSTRACT:
A measuring instrument provided with measuring vials for determining level or pitch relationships and a graduated straight edge for measuring linear distance. In the first embodiment, the instrument consists of a composite aluminum and plastic structure where the plastic structure forms the body portion having the vial holders and viewing windows and the aluminum portion forms the graduated straight edge. A second embodiment consists of an aluminum structure having a flat elongated frame portion and an integrally formed base portion disposed perpendicularly thereto. The frame portion forms the graduated straight edge and carries the measuring vials.

REFERENCES:
patent: 423669 (1890-03-01), Byrne
patent: 621358 (1899-03-01), Merrill
patent: 854325 (1907-05-01), Belcher
patent: 3302233 (1967-02-01), Sebastiani
patent: 3593428 (1971-07-01), Jacoff

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