Lettering triangle

Details Lettering triangle Lettering triangle

1979-04-09

1980-03-25

Haroian, Harry N.

Geometrical instruments

Straightedge type

With means for moving straightedge over a surface

33174B, B43L 1302

Patent

active

041942930

ABSTRACT:
A molded, transparent draftsman's triangle provides an adjustable lettering guide for rapid freehand lettering.

REFERENCES:
patent: 2016985 (1935-10-01), Carlson
patent: 2430230 (1947-11-01), Kuhl
patent: 2702944 (1955-03-01), Lane et al.
patent: 3602999 (1971-09-01), Villiger

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