LS Starrett's Pro-Site Protractor is one of those things that, once you've used a couple of times, you wonder how you ever got by without it. The tool is designed to map angles mostly for trim. Use the protractor to trace the angle and unlike a wimpy bevel square the Pro-Site's scales indicate the exact miter saw setting for one- or two-piece cuts.
I've used this tool way more than I ever thought I would: for blocking and drywall in a hip roof retro-fit; determining arbitrary angles for casework design; and for woodworking. I even used it laying out stair stringers when my framing square went missing. I have a kitchen crown molding project coming up with funky inside corners and the Pro-Site will be my go-to.
LS Starrett's Pro-Site Protractor was designed job-site tough by remodeler Marc Shapiro. It's an authentic time saver and quality enhancer. Nice work.