Drafting instrument

Details Drafting instrument Drafting instrument

1995-01-05

1996-10-29

Will, Thomas B.

Geometrical instruments

Gauge

Template

33562, B43L 1300

Patent

active

055686907

ABSTRACT:
An improved drafting instrument is provided and consists of a base board and a slide member. The instrument is so constructed that various geometrical figures, such as squares, rectangles, right-angled isosceles triangles and regular triangles, are accurately drafted in the various dimensions between a minimum and maximum dimension without using conventional frame rules. The base board is provided with one or more openings, and guide rails along which the slide member is slid and positioned for drawing. By displacing the slide member along one of the guide rails and positioning against the guide rail, a figure having a desired dimension is formed and drafted.

REFERENCES:
patent: 2702944 (1955-03-01), Lane et al.
patent: 3483628 (1969-12-01), Newman
patent: 4026030 (1977-05-01), Kuever et al.
patent: 4094071 (1978-06-01), Denaro
patent: 5099582 (1992-03-01), Chang

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