Starrett has a new plastic version ($25) of its Pro Site Miter Saw Protractor that's half the size and price of the aluminum model — and less than an eighth of the weight. In addition to true angle markings it shows angles as represented on the scales of miter saws, so you don't need to figure any conversions. Another scale shows the angle to set your saw at to bisect the measured angle. By tightening the pivot screw on the back of the protractor with a coin, you can get the joint to hold tight enough to pivot the saw blade against the arm of the tool, which is handy for times when you don't need to measure the angle you're cutting. 843-746-3578,