Straightedge

Details Straightedge Straightedge

B - Operations, Transporting

43

L

33/79

B43L 7/027 (2006.01)

Patent

CA 1285385

ABSTRACT A transparent straightedge with two L-shaped slots, a multiplicity of vertical and horizontal scales running adjacent to and parallel to the slots, and reference arrows. The L-shaped slots are exactly 90 degrees. Center reference scales in the center portion running vertically. The reference arrows line up with the slots. Opposing scales and center reference scales are all in alignment.

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