The latest Woodworkers Edge Principle provides precise weights to simplify your workflow. Our precision rulers can provide unparalleled panel layout accuracy. Simply press your head at the desired angle and then press straight line. The head can be adjusted from 0° to 70° and is firmly locked in 5° increments (plus 22-1/2° and 67-1/2°) to provide you with an accurate reference angle. The lengths are 10 inches and 15 inches, respectively. The main features? Reduce errorsBoth sides of the ruler are laser engraved and the scale is Every 1/32.The tolerance of the scale is the total cumulative error± 0.04 cm. The thin satin-finished stainless steel blade is easy to read and minimizes parallax errors.? With High PrecisionOur new carpenters edge principle has text design, and each 16-inch blade has a groove for accurate measurement.? Easy to usePress the Woodworkers edge rule on the board and rotate the ruler to get the desired angle. Each 16-inch blade has a groove. Simply place the pencil in the notch and move your head along the edge of the barrel to create a perfect line of parallel.? The right gift for Father's DayEveryone always likes tools. The woodwork edge principle is easy to use and easy to carry. It is widely used in woodworking, surveying and mapping, DIY projects, decoration, processing, etc. It is a suitable gift for Father's Day. Using MethodSpecificationsProduct Weight: 10 inch: 385G15 inch: 430GRuce Size(L x W x H) 10 inch: 26 × 15 × 5cm/10.2 × 5.9 × 2 inch15 inch: 40 × 15 × 5cm/15.7 × 5.9 × 2 inchPackage Contents: Carpenters Edge Rule × 1NoteDue to different display and lighting effects, the actual color of the item may be slightly different from the color displayed on the pictures.