Perspective drawing machine

Details Perspective drawing machine Perspective drawing machine

1980-05-20

1982-11-09

Haroian, Harry N.

Geometrical instruments

Straightedge type

Base attached

B43I 1314

Patent

active

043577571

ABSTRACT:
This invention relates to a perspective drawing machine and more particularly, to a machine which will keep track of a chosen vanishing point. This invention describes a mechanical machine in which the corrected voltage is computed on an external calculator or computer, which when found on the output potentiometer will result in the correct line pointing at the invisable vanishing point.

REFERENCES:
patent: 3714714 (1973-02-01), Bullard

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