Device for drawing objects in perspective

Details Device for drawing objects in perspective Device for drawing objects in perspective

1974-11-29

1976-03-23

Aegerter, Richard E.

Geometrical instruments

Scriber

Curved line

33104, B43L 1314

Patent

active

039451232

ABSTRACT:
A pre-calibrated or pre-scaled geometrical instrument having no moving parts which provides necessary indicia on the face of the device which allows a draftsman or the like to draw objects in perspective, the indicia information including the right and left vanishing points, scaled indicia along the picture ground line and center vision and alternate measuring points. Each device is calibrated with indicia for a particular object viewing angle. The device itself is planar shaped with one surface having the necessary indicia disposed thereon. Predetermined surface edges of the device represent the picture ground lines and a ground measuring line.

REFERENCES:
patent: 1723517 (1929-08-01), McFadden
patent: 2610407 (1952-09-01), McQuaid
patent: 2713205 (1955-07-01), Nielsen

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