Accurate angle layout on larger panel projects challenges even the most skilled woodworkers. You can try extending lines started with a small protractor, but even tiny errors keep growing the further your line extends. Woodpeckers newest OneTIME Tool, the Posi-Lock T-Square, delivers unparalleled accuracy in your panel layout work. Just snap the head in to the angle you want and strike your line. The head adjusts from 0° to 70° and locks solidly every 5 degrees (plus 22-1/2° and 67-1/2°), giving you a precise angle reference 12-, 24-, or 32-inches long. No other adjustable T-square gives you the range of angles and the positive indexing you get with the Posi-Lock.