Full circle protractor with detachable adjustable leg assembly f

Details Full circle protractor with detachable adjustable leg assembly f Full circle protractor with detachable adjustable leg assembly f

1990-06-06

1992-06-02

Will, Thomas B.

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

33424, B43L 710

Patent

active

051175606

ABSTRACT:
A measuring instrument includes a pair of pivotally connected legs that can be placed on a circular protractor. The protractor contains three separate scales one of which will translate angular measurement provided by the pair of adjustable legs directly into a reading for setting the angle of a saw blade in an adjustable miter saw.

REFERENCES:
patent: 346519 (1886-08-01), Tybjerg
patent: 552261 (1895-12-01), Rafferty
patent: 655005 (1900-07-01), Penfield
patent: 1128673 (1915-02-01), Foner
patent: 1277860 (1918-09-01), Civitts
patent: 1524730 (1925-02-01), Cain
patent: 1665898 (1928-04-01), Strickland
patent: 1878119 (1932-09-01), Dowd
patent: 2278440 (1942-04-01), Graves
patent: 2594574 (1952-04-01), Marosen

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