Screw Hole Guide for Dimensional Lumber

This guide helps you mark where a screw hole needs to be placed for the center on the end of a piece of dimensional lumber. For example, place the guide on the end of a 2x4 inch (truly 3.5x1.75 inch) U.S. construction stud, and the hole made with the 2 and the 4 is at the center of the end face.