Base auxiliary marking, easy to draw straight lines, thickened base auxiliary marking, draw smooth straight lines Precise positioning, angle marking, equipped with angle measuring auxiliary ruler, auxiliary marking Removable angle measuring auxiliary ruler, accurate angle measurement, can be used on both sides, angle measurement is more accurate Double-sided scale design, one side is multi-purpose, both sides are applicable, flexible to cope with various measurement scenarios High-quality and carefully selected aluminum alloy material, not easy to rust | strong and durable | anti-corrosion and anti-rust The actual product may have slight color difference or difference, which will not affect the use Colour:Red Material:Aluminum Alloy Package Contents: 1 x Horizontal Right Angle Ruler Only the above package content, other products are not included. Note: Light reflection 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.