Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1981-01-23
1982-06-22
Phillips, Charles E.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
G01C 928
Patent
active
043355234
ABSTRACT:
A tool for selectively angularly aligning an apertured flange so that the flange can be fixed to a pipe at a selected angularity relative to bends in the pipe. Improved device for attaching the level to the flange are shown, and the level can further be provided with means enabling it readily to be used also to set the grade of a pipe or of a structural member.
REFERENCES:
patent: 1891573 (1932-12-01), Phelps
patent: 2358564 (1944-09-01), Donaldson
patent: 2531799 (1950-11-01), Zumwalt
patent: 3402613 (1968-09-01), Neusel et al.
patent: 3499225 (1970-03-01), Darrah
patent: 3822481 (1974-07-01), Doan
patent: 4133115 (1979-01-01), Stockholm
"Dial Angle Flange Level" by Curv-O-Mark, form 5-300 stock #20.
Mon Donald D.
Phillips Charles E.
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