Alvin Rolling Parallel Glider 12”

Multipurpose drawing tool with frictionless design that allow you to draw horizontal & vertical parallel lines with ease. Great to draw guidelines for calligraphy and hand lettering. Built in protractor for measuring angles. Draw circles in the radius that you need. Perfect for artists, students, engineers and designers. Graduated in both inch and metric formats. Includes a variety of useful formulas & conversion factors. Never used, but may have minor scratches from storage.