A classic folding rule manufactured from downy birch, affording thin sections and great flexibility. Scale with black figures on both sides: metric along the bottom edge and British imperial along the top edge. Coat with a water-based protective lacquer gives it increased resistance to dirt and moisture. The joints are made from Swedish steel and heat-treated, epoxy coated and oiled at three points to ensure first-class performance. Each folding rule section is checked twice during the production process with high-speed cameras.