Geometrical instruments – Scriber – Parallel line
Patent
1993-04-05
1995-04-18
Fulton, Christopher W.
Geometrical instruments
Scriber
Parallel line
33760, 33770, 33668, G01B 310, B43L 700
Patent
active
054067111
ABSTRACT:
An apparatus is provided for enabling the marking and cutting on a straight line on an upper surface of a workpiece. A guide has a side guide surface, a top guide surface, and a base. The side guide surface and the top guide surface are mutually orthogonal. A clamp supports a case of a reeled measuring tape on the base. The damp has a fixed clamping surface and a movable clamping surface. The movable clamping surface is adjustable to contact one side of the reel case while the fixed clamping surface contacts the opposing side of the reel case, whereby the reel case is held fixedly and the holding means may hold any one of a wide range of reel case widths. The measuring tape has an engagement tongue protruding from the leading edge thereof, and the case of the measuring tape has a reel lock for fixing the tape in a position extended from the case. A hand tool, such as a knife or marking implement, works in cooperation with the guide and has an engagement slot. The tongue of the measuring tape engages the slot of the hand tool, thereby connecting the hand tool to the tape. The side guide surface and the top guide surface slide along an edge of a workpiece while the hand tool moves along the upper surface of the workpiece, such that a line is cut or drawn into the upper surface at a fixed distance from the edge of the workpiece.
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