Koala Tools Geometric Transparency Grids

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Features four gridded transparencies to aid in drawing projects: quadrille, 1/4" isometric, golden ratio and circular (polar coordinates). Quadrille is marked in 1/2" increments with a solid line and 1/4" increments with a dotted line. Designed for use with lightboxes or overhead projectors. Made of 0.3mm PVC film, each transparency measures 8-1/2 x 11".

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