Measuring ruler

Details Measuring ruler Measuring ruler

1987-06-22

1988-06-14

Cuchlinski, Jr., William A.

Geometrical instruments

Straightedge type

Rules

33137R, G01B 304

Patent

active

047502703

ABSTRACT:
A measuring ruler, having a straight edge and a set of subunit measuring indicia adjacent the edge, wherein the indicia comprise a series of first and second measuring marks of equal width, in side-by-side alternating arrangement, normal to the edge, wherein the color of the first marks is in stark visual contrast to the color of the second marks.

REFERENCES:
patent: 1687429 (1928-10-01), Datson
patent: 3202129 (1965-08-01), Weldon
patent: 3399459 (1968-09-01), Martin
patent: 3787982 (1974-01-01), Anderson
patent: 4247986 (1981-02-01), Burroughs

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