The metal locator is available in a variety of size, suitable for rulers of various widths, and holds ruler firmly and stable. Quick and easy to draw straight lines with accurate dimension without other cumbersome tool. High working efficiency and accurate scale to ensures correct marking. Small size, easy to store and carry. Crafted from metal,smooth, rustproof, wear resistant and strong, not crack or deforms. Just limit ruler to the required size and lock the screw for easy use., Manufacturer: Vdaxvme