Attachment for T-square for use with writing implement

Details Attachment for T-square for use with writing implement Attachment for T-square for use with writing implement

1993-08-06

1995-07-11

Will, Thomas B.

Geometrical instruments

Straightedge type

Rules

33485, 33 321, B43L 0708

Patent

active

054309476

ABSTRACT:
A geometrical instrument for use with a straight edge to mark positions on a flat surface is described. The instrument has a receiver slot on its rear side. The receiver slot extends the width of the instrument such that the instrument can be slideably mounted on the straight edge, The instrument includes a holder to position a writing implement above the receiver slot such that the writing implement marks the flat surface. The instrument also includes a positioning hollow with a centering point aligned with the center of the holder. Additionally, the instrument may include a slot for inserting a knife blade.

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