Movable type measurement scale at variable angles

Details Movable type measurement scale at variable angles Movable type measurement scale at variable angles

1993-11-09

1995-10-31

Cuchlinski, Jr., William A.

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

33456, 33418, 33419, 33424, B43L 710

Patent

active

054617944

ABSTRACT:
The present invention relates to a kind of movable device which varies at any angle to serve as measurement ruler, and more particularly to an improved structure of measurement ruler with multiple functions in use. The ruler's main body is L shaped with engraved number of degrees on both sides, one side with sliding channel and a sliding through installed at the lower end of the sliding channel, which is wider in breadth than the channel, one measurement ruler like a straight stick with engraved numbers in degrees, one end of which is in conical shape and the other end of which at the top there installs a sign index with a conical peeping hole and a set of installation holes, one scale ruler in semi-circular shape with sliding block in consecutive form. Under it, there is sliding column on which there are threaded lines. AT the front end, there in an assembly hole. The semi-circular body is engraved with the degrees in angle.

REFERENCES:
patent: 71595 (1867-12-01), Evans
patent: 143595 (1873-10-01), Shoff
patent: 418256 (1889-12-01), Werts
patent: 905249 (1908-12-01), Townsend
patent: 912605 (1909-02-01), Osmonson
patent: 1015773 (1912-01-01), Auger
patent: 1632267 (1927-06-01), Beem
patent: 5205045 (1993-04-01), Liu

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