what is a drywall square used for
Drywall T-Square. A drywall t-square is essential for cutting and installing drywall panels. It is used primarily to provide a strait-edge along which to cut drywall using a drywall utility knife. Below are a few tips to look for when buying a drywall t-square. Drywall t-squares are basically two pieces of metal connected at right angles to one another.