Name:80X50mm Precision Knife Edge Square Ruler 90 Degree Right Angle Ruler Engineer Measuring Tool 1. For checking the squareness of an edge, using the light-gap method. The blade is bevelled on both sides. 2. Accuracy grade 1, squareness tolerance of 0.02-0.05 mm. 3. Beams and blades are ground and lapped for parallelism. 4. 30degree Knife edge, beams and blades are ground and lapped. 5. Use For: 90degree right angle measuring, designed for precision layout and measurement work.
Model Number:Knife Edge Square Ruler DIY Supplies:Woodworking colour:Silver Material:stainless steel size:80 x 50mm
Package Contents: 1 x Right Angle Ruler
Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.