Geometrical instruments – Miscellaneous – Light direction
Patent
1977-04-20
1978-06-20
Martin, Jr., William D.
Geometrical instruments
Miscellaneous
Light direction
33 86, 33286, E04G 2118
Patent
active
040953432
ABSTRACT:
Each of four templates comprises crossed strips which define straight edges for aligning masons lines. Additional strips are fixed to, and extend perpendicularly from, one end of each of the cross strips. Notches in these additional strips define pin locations for wall and footing lines.
REFERENCES:
patent: 1327198 (1920-01-01), Carlson
patent: 2562597 (1951-07-01), Breuninger
patent: 3318004 (1967-05-01), Payne
patent: 3381379 (1968-05-01), Fergen
patent: 3823480 (1974-07-01), Grundman
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