Engineer's Folding Rule by Hultafors Save Liquid error (product-badge line 32): -Infinity% $13.50 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Engineering scale on the inside and inch scale on the outside. 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 is run through inspection to ensure accuracy. Made in Sweden.