Scale Ruler: The Isometric Line Ruler has been lengthened, widened, and thickened as a whole, which is comfortable and portable Rules For Sewing And Pattern: The precise size of the overall engraving line is up to 80mm, and the double fixed slide rails are precisely controlled Rules For : The top nut controls the position of the marking needle, and the right end nut adjusts the position of the vernier scale Office Accessories For Desk: The tungsten steel triangular head marking ruler is sharp and wear-resistant, making marking smooth and improving efficiency For Drawing: This ruler is for those who need precise measurements and smooth markings in their drawing projects, Weight: 0.0881849048 Pounds, Manufacturer: ALCXAZS