Parallel drafting arm, with double-sided scale. Scale with needle hole for precise compass radius setting

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

Made of sturdy, break-resistant plastic, with non-slip rubber feet

Matching carry bag also available from here: https://www.copyquick.mt/product/staedtler-mars-technical-board-case-bag-a3/