Geometrical instruments – Straightedge type – Combined with level
Patent
1983-11-17
1985-03-26
Little, Willis
Geometrical instruments
Straightedge type
Combined with level
33429, 33437, B43L 700
Patent
active
045064512
ABSTRACT:
A multi-functional tool arranged to allow rapid marking of perpendicular and angular lines on material surfaces is disclosed. One or more extendable stops are provided in the body of the tool to rapidly fix the angular orientation of a marking edge. Optionally, associated measuring devices such as a level, tape measure, and plumb bob, may be included to facilitate the location and orientation of the position to be marked.
REFERENCES:
patent: 934260 (1909-09-01), Allison
patent: 2098616 (1937-11-01), Cutting
patent: 2495645 (1950-01-01), Schultes et al.
patent: 3456353 (1969-07-01), Iams
Brandt John M.
Little Willis
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