Review on 📏 Koolertron Protractor Goniometer: Accurate and Efficient Measuring Function by Joseph Stone

I needed a quick way to determine the corners of several wall corners in my workshop. Close found drywall corners, but not exactly 90 degrees. I am installing the countertop wall to wall and need to trim the ends to fit the corner of the wall. This tool found those corners quickly and they were easy to transfer to the work surface to fit perfectly. I love light text on dark background. A great tool for those who love DIY.