This ruler has a reference edge that you hold up against a piece of wood or metal, like a T-square. There are four rows of tiny holes. Within each row the holes are spaced 1mm apart, but each row is shifted by 0.25mm relative to the one before, so there’s a hole every 0.25mm from the edge.
Location: Box 10
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!
