This great Scale Divider from Derwent enables you to accurately transform the scale of your image from 4:1 to 1:4. Perfect for getting perspective right.
Triangular section, metric 30cm / 12" rules. Scales featured 1:1, 1:10, 1:2, 1:20, 1:5, 1:50, 1:100, 1:200, 1:500, 1:1000, 1:1250, 1:12500. In a protective plastic sleeve
This great flexible curve ruler comes in 5 sizes. Exceptionally flexible it is made from vinyl which does not discolour or decompose, the core is lead and there is a raised edge for ink ruling.
Even more accuracy in your erasing! Made from flexible, polished stainless steel this brilliant shield has various different shapes to help you get that erasing just right.
Enlarge or reduce drawings from 1:5 to 15 times in one go with this brilliant, wooden pantograph. Full instructions included.