Ruler means for dividing a distance

Details Ruler means for dividing a distance Ruler means for dividing a distance

1978-10-03

1980-06-24

Shepperd, John W.

Geometrical instruments

Straightedge type

Square and pivoted straightedge

33424, 33487, B43L 706

Patent

active

042088046

ABSTRACT:
A ruler means for dividing a distance into an optional number of parts, e.g., into equal parts. The ruler means comprises a ruler with a number of numbered scales with a zero point. Said ruler is, along said scales, provided with holes for plotting an optional division of an auxiliary distance such the the projection thereof comprises the actual distance to be divided. The holes are equidistantly spaced and tapered toward the rear face of said ruler.

REFERENCES:
patent: 971529 (1910-10-01), Dickson
patent: 1290977 (1919-01-01), Greene
patent: 1451572 (1923-04-01), Green
patent: 2342476 (1944-02-01), McEvoy et al.
patent: 3020642 (1962-02-01), Rickey
patent: 3416232 (1968-12-01), Overbay
Gresecke, Mitchell, Spencer "Technical Drawing, " MacMillan Co., 1949, p. 71.

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