APPLICATIONThis stainless steel ruler is very suitable for drawing, architectural design, measurement, office, and decoration design, and woodworking.ABOUT THIS PRODUCTSThe ruler is made of stainless steel, high hardness, sturdy, and durable, not easy to rust or bend. The adjustable positioning block is made of copper material with a smooth surface.The stainless steel ruler is used with the positioning block to make positioning and marking more convenient. Just move the scale to the required scale and tighten the screws.The text is clear, and the scale is precise and easy to read.SPECIFICATIONMeasuring Range: 100cm/40"; Inch and Metric Graduation: 0.5mm 1/64"; Width: 35mm/1.38"; Thickness: 1.5mm/0.06"; Positioning Block Size: 45x20x10mm/1.77"x0.8"x0.4"(L*W*H); Applicable size of positioning block: 36x1.9mm/1.42"x0.