Geometrical instruments – Straightedge type – With means for moving straightedge over a surface
Patent
1993-08-19
1995-07-18
Will, Thomas B.
Geometrical instruments
Straightedge type
With means for moving straightedge over a surface
33448, B43L 1302
Patent
active
054330122
ABSTRACT:
A rolling rule that is effective and/or diversified and/or capable of being easily positioned at a desired position and/or capable of being or easily manipulated/controlled is provided. The rolling rule includes a role body, a roller rotatably mounted in the rule body for enabling the rule body to be translated easily in a parallel fashion, a braking device mounted on one side of the rule body, which is to be exerted by a force generally along a direction parallel to a surface of a work piece for permitting the braking device to easily and conveniently brake the roller when a braking occasion is desired, and an outer surface layer having a relatively high frictional coefficient and surrounding the roller for enabling the roller to be positively controlled in motion or at a stop.
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