Large center hole designs would fit for your finger to hold, fastens this ruler on workpieces, easy and comfortable to place, handle, around and will not damage fragile cuttings edges Perfect for woodworking enthusiasts, architects, and enthusiasts who require accurate measurements Achieve precise measurements with our Woodworking Square, for accurate measurement at 45° and 90° Crafted from materials, our square is and lightweight, easy to carry around The engraveds imperialsand metricscale on the side of 45 Degree angled ruler is clear and precise, easy to read and make, Manufacturer: HVRFJXI