Feiruifan Precision 90 Degree Right Angle Knife Edge Square Ruler Engineer Measuring Tool

Specifications: For checking the squareness of an edge using the light-gap method. The blade is bevelled on both sides. Accuracy grade 1 squareness tolerance of 0.02-0.05mm. Beams and blades are ground and lapped for parallelism. 30 degree edge beams and blades are ground and lapped. Item Name: Edge Square Ruler Material: High Carbon Steel Features: Durable Precision Engineer Tool Size(Optional): 5cm x 4cm/1.97 x 1.57 7.5cm x 5cm/2.95 x 1.97 10cm x 7cm/3.94 x 2.76 (Approx.) Notes: Due to the light and screen setting difference the item s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Edge Square Ruler