Parallel rulers
Various parallel rulers
Showing a range of parallel rulers variying from early ebony ones via a small ivory / ivorine one part of a drawing set through a plastic Linex one used by me in nautical college. A special one is the mahogany three legged one which allows the ruler to create parallel lines next to a line rather than shiting the lines (it also has a wider reach).
par rulers
8 other products in the same category:
Various parallel rulers