Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1996-01-22
1998-09-08
Will, Thomas B.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33347, G01C 928
Patent
active
058027297
ABSTRACT:
A leveling device for assisting in properly orienting picture frames and other hanging articles on a vertical wall surface. Preferably, the device includes a planar body having a bubble level and a suction cup for temporarily affixing the device to a smooth surface of the frame, i.e. a glass pane. A foot surface and planar hooking structure provide alternative affixing structure such that the device can be used on a wide variety of frames and the like.
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O'Brien Patrick D.
Weber Jeff A.
Klos John F.
O'Brien Patrick D.
Will Thomas B.
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