4pcs Metal Ruler Drawing Measurement Tools Geometry Maths Triangle Ruler Straightedge Protractor Office School Stationery Supplies Feature: 1. There are 4 kinds of gauges to meet various purposes. 2. The scale is clear and easy to read. 3. The measurement is accurate and easy to use. 4. Excellent material and fine workmanship. 5. Convenient to carry. Uses: students, pain g, designing and drawing, etc. Specification: Material: Metal Packing size: 165*72*10mm Color: Black, White Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 4 X Ruler