Staedtler 661 Mars College Drawing Board | With parallel drafting arm, with double-sided scale | Convenient single-hand double locking mechanism for setting at any position on the rail | Twin rail for especially smooth, even gliding of the ruler | Colour indicator shows whether locked or unlocked | Sheet clamping strips on both sides of the drawing board for fastening of paper | Scale with needle hole for precise compass radius setting | Made of sturdy, break-resistant plastic | With non-slip rubber feet | This item is manufactured in Germany