The Hultafors Wooden Folding Rule is traditionally manufactured from downy birch with Swedish steel joints for thin sections and great flexibility. A metric scale in black appears on both sides, and red decimetre figures. Type approved as per EU Class III. Coated with a water-based protective lacquer for increased resistance to dirt and moisture. The joints are heat-treated, coated and oiled at three points to ensure first-class performance. Each folding rule section is checked twice during the production process using high-speed cameras.
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