Geometrical instruments – Scriber – Curved line
Patent
1976-06-08
1978-03-07
Haroian, Harry N.
Geometrical instruments
Scriber
Curved line
G01C 1510
Patent
active
040771270
ABSTRACT:
A device to be used by brickmasons in the erection of a brick wall that embodies, speed in setting-up, precision and choice of mortar joint spacing and is adjustable to a variety of wall heights.
REFERENCES:
patent: 1094286 (1914-04-01), Winstead
patent: 1872860 (1932-08-01), Winter
patent: 3114975 (1963-12-01), Jones
patent: 3153284 (1964-10-01), Harris
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