STAINLESS STEEL ACCURATE RULER ----- Made of stainless steel, rust and corrosion resistant, sturdy and durable. The in-depth graduations are clear and easy to read. SEPARATE ACCESSORIES ----- Combination: a spirit level + a protractor + a centering gauge, an aluminum alloy frame. The bottom fixing nut can be adjusted for separation, easy to carry and measure specifically. MULTI-FUNCTION MEASUREMENT ----- Length range 0~300mm. Perfect for measuring horizontal/vertical/inclined plane, right angle, 45 angle, width, depth, height, etc. IDEAL TOOL FOR WORKER-----Widely used in engineering, carpentry, decoration, DIY, drawings, design. An essential complement to measuring tools for amateurs and professionals and for the family.