Portable drawing apparatus

Details Portable drawing apparatus Portable drawing apparatus

1979-06-08

1980-09-30

Haroian, Harry N.

Geometrical instruments

Straightedge type

Base attached

B43L 1302

Patent

active

042247420

ABSTRACT:
A drafting set, including a drawing board and a T-square, the board having a foldable easel on its rear side for supporting the board in various adjustable positions, the T-square including a slidable shoe on its outward end for bearing against an edge of the board which is opposite an edge against which the T-square crosshead bears, and permanent magnet means holding the shoe and crosshead from falling away from the board edges.

REFERENCES:
patent: 1126410 (1915-01-01), Daly
patent: 3086291 (1963-04-01), Harrison

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