Product Name:90 Degrees Positioning Ruler
*There are different holes for you to fixing, ensuring your work more convenient.
*Place a square in the corner of the two stock pieces you need to square and secure with a set of clamps
*Beveled edges, easy to handle and won’t damage fragile cutting edges.
*Designed to be clamped to boxes, picture frames, shelf cabinets, 90 degree weld and for outside corners