Multi-function level

Details Multi-function level Multi-function level

1978-05-23

1979-03-20

Phillips, Charles E.

Geometrical instruments

Scriber

Curved line

33119, B43L 706

Patent

active

041446500

ABSTRACT:
A pair of arms pivotally connected for relative rotation and a brake actuated by a rotatable lever positionable from either side of the level to restrain the arms against relative rotation or to allow the arms to freely rotate.

REFERENCES:
patent: 1440284 (1922-12-01), Engstrom
patent: 2661034 (1953-12-01), MacDonald
patent: 3783518 (1974-01-01), Jones

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