Slide rule

Details Slide rule Slide rule

1979-06-19

1980-12-30

Hix, L. T.

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Tabular

G06C 300

Patent

active

042418674

ABSTRACT:
A novel product selection slide rule is disclosed which allows the user of the slide rule to quickly determine which product from a grouping of products is best for a particular condition or property which he selects. The applicant's slide rule isolates the product best suited to the application out of a multiplicity of products and possibilities. The novel slide rule comprises a front and back cover with the front cover containing a plurality of viewing apertures and a plurality of stylus apertures. Between the front and back cover is positioned a central filler and a plurality of movable elongated slides are positioned within an elongated opening in the central filler. Each slide has formed thereon predetermined zones of different indicia for viewing through a plurality of viewing aperatures on the front cover.

REFERENCES:
patent: 1410195 (1922-03-01), Kopp
patent: 2380318 (1945-07-01), Kline
patent: 3232401 (1966-02-01), Jones
patent: 3352031 (1967-11-01), Lindquist
patent: 3451619 (1969-06-01), Buck

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