Derwent Scale Divider. Scale pictures up or down for use in artwork and keep the proportions of the image. For example you can draw a photo image onto a larger canvas while keeping the main image proportional. Reproduce a smaller or bigger image image onto your chosen medium. Scales are adjustable and can help you copy an image as it is (1 to 1), enlarge it by up to x 4, or shrink it down to 4 times smaller. Hopefully that makes sense.
