Artist's aid

Details Artist's aid Artist's aid

1988-02-09

1989-04-11

Grieb, William H.

Education and demonstration

Visual art or craft, artistic adornment, or color training...

33 1K, G09B 1100

Patent

active

048201634

ABSTRACT:
An artist's aid comprising a sheet member which includes a transparent green filter for determining the differences in reflected light among various surfaces appearing in a visual field, a square aperture for framing a selected portion of the visual field, a circular aperture for visually isolating a relatively small portion of an object appearing in the visual fields, and three apertures arranged at the vertices of a triangle for visually separating a plurality of objects appearing inthe visual field.

REFERENCES:
patent: 1612791 (1927-01-01), Ames et al.
patent: 2193518 (1940-03-01), Lubin
patent: 2528765 (1950-11-01), Lindberg
patent: 3384983 (1968-05-01), Olson
patent: 4400161 (1983-08-01), Gerlt
Liquitex Value Finder, .COPYRGT.1980, Binney & Smith, Inc.

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