A carpentry tool is designed for cutting wood; it is a good tool if it cuts well. It consists of a compass of pressed steel with a pencil in one leg or end and a metal point in the other leg. It is used primarily to mark and measure 45 and 90 degree angles. Many variations of combination squares are available, but each has the square, used to measure the accuracy of right angles, as one its components. It is also used for pushing flooring boards into contact on a joist can be operated with one hand, leaving the carpenter's other hand free for hammering. The tool includes a body member having offset clamping lugs for engaging each side of a joist.