Derwent Scale Divider (Ratio from 4:1 to 1:4)

The Derwent Scale Divider is a great tool to help with increasing or decreasing the scale of your subject. Use the Derwent Scale Divider to help transform the scale of your image with accuracy and control, transfer measurements from photographs, paintings and more with ease onto paper, achieving accurate proportions every time. It folds away so can easily be slipped into a backpack or pencil case if you are using it outdoors. Reduce or enlarge images in ratios from 4:1 to 1:4.