Description Portable: The architectural scale ruler is light-weight and convenient to carry, you can simply keep in your bag. High Quality: Aluminum alloy scale ruler with triangular body for safer cutting and scoring of materials. Function: Clearly marked scales allow precision drawing for architects, engineers and carpenters. Precise: Clear scale for easy reading, the architectural scale ruler has high accuracy and easy to use. Durable: The architectural scale ruler is made of high quality material, high strength, durable and reusable. Delivery Quantity: 1pc, Package Contents: Only the above package contents, excluding other products. Size: 30cm long, there are 6 scale sizes on the ruler: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125; (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Color: silver (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)