12 Inch/30 cm Triangular Architect Scale In Black Imperial Scale: 1-1/2, 1, 3/4, 3/8, 3/16, 3/32, 1/2, 1/4, 1/8, 3, 16 Architect Aluminum Ruler With Laser Cut Imperial Prints For Accuracy And Durability; They Will Not Wipe Or Scratch Off Ever Triangular Ruler Made From High Impact Aluminum, Build To Last Designed To Facilitate The Drafting And Measuring Of Architectural Drawings And Technical Illustrations Such As Floor Plans, Blue Prints, And Orthographic Projections
