Derwent Scale Divider, 11 Graduation Holes, Black, Professional Quality.

•Scaler for transferring measurements into your artwork, perfect for professional and amateur artists of all ages as well as students •Indispensable tool for any artist - use the scaler to transfer measurements from life, photos, and sketches to achieve accurate proportions in your artwork every time •Ultimate precision in a drawing tool, scaling your pictures in ratios from 4:1 to 1:4 thanks to the 11 graduation holes