Transparent perspective tracing board

Details Transparent perspective tracing board Transparent perspective tracing board

1982-09-30

1985-02-12

Stearns, Richard R.

Geometrical instruments

Miscellaneous

Light direction

33262, 434 90, 434 91, B44D 200

Patent

active

044982380

ABSTRACT:
A transparent perspective hand-held tracing board is shown for use with a sheet of transparent drawing material. This board is formed of a rigid plastic or glass panel. A measured pattern is imprinted on the panel to assist in judging distance and relative angles. A supporting handle is mounted from one side edge of the panel for use by one hand in holding the panel in space so that an object being drawn at a distance may be sighted both through the drawing material and the board, and the angle and distance of the board may be adjusted to fit on the said measured patterns so the object may be traced on the drawing material.

REFERENCES:
patent: 464359 (1891-12-01), Hagan
patent: 761033 (1904-05-01), Cross
patent: 2487690 (1949-11-01), Black et al.
patent: 3479741 (1969-11-01), Nicyper
patent: 3834043 (1974-09-01), Summers
C.D.I., "The P-Scope Instruction Manual", 1982, 4 pp.

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