Apparatus and method for measuring angles between angularly rela

Details Apparatus and method for measuring angles between angularly rela Apparatus and method for measuring angles between angularly rela

1992-04-16

1993-04-06

Haroian, Harry N.

Geometrical instruments

Straightedge type

Multiplane angularly adjustable

33481, 33456, B43L 700

Patent

active

051991799

ABSTRACT:
The measuring tool includes a pair of measuring sections pivotally hinged one to the other. Each section includes a flat plate mounted for pivotal movement about an axis normal to the hinge axis. Frictional locking means lock each plate in adjusted pivotal positions about its axis. A frictional locking means also locks the pivoted sections one to the other in adjusted positions about the hinge axis. The plates contain measuring indicia and are slidable linearly in a direction parallel to the axis about which the plates are pivoted.

REFERENCES:
patent: 718344 (1903-01-01), Hampton
patent: 1324681 (1919-12-01), McDonald

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