Accurasee Proportional Divider, Brand new, for artist or drafters.Brand New, This sells for $42 + tax on Amazon (see link below) an invaluable tool for artists!;It's about transferring scale, this simple drawing tool can teach you how to draw! see link below (cut and paste) https://www.amazon.ca/Accurasee-Proportional-Divider-by/dp/B005QSBA2S/ref=sr_1_1?