A measuring tool for determining angles at two points of interest, including an elongate arm and two protractors, one protractor rotatably mounted at each end of the arm. Each protractor includes a flat for positioning the protractor against one of the two points of interest. The angle at each point of interest is the angular measurement between the arm and the two flats, respectively. The arm may include two attachment sections, one each of the two attachment sections rotatably connected to one each of the two protractors, respectively, and an L-shaped guide having three connection points for selectively receiving and retaining the two attachment sections in various configurations as desired.