Geometrical instruments – Straightedge type – Combined with level
Patent
1992-11-16
1993-09-21
Will, Thomas B.
Geometrical instruments
Straightedge type
Combined with level
33479, 33376, 33478, B43L 702, G01C 926
Patent
active
052457583
ABSTRACT:
An attachment for a carpenter's level to create a T-square comprises an integrally molded head member having a rectangular socket formed therein and extending perpendicular to reference edges defined by opposed parallel spaced-apart side walls. By inserting one end of a spirit level into the socket and by tightening down a set screw, the head member is releasibly attached to the carpenter's level and with the longitudinal axis of that level intersecting the bottom edges of the head member at an angle of 90.degree..
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