Built with the tradesman in mind, the OX Pro Aluminum Rafter Square offers accurate and easy reading. The square includes integrated distance and angle scales which allow for quick and accurate readings and markings alike. It is easy to read as the numerals are clearly visible due to the white laser etched markings on the body. The solid aluminum body with a durable alloy construction gives this rafter square its overall durability. It is built tough and can handle any jobsite being that it is both weather resistant as well as rust proof. The multi-functionality of this rafter square allows you to tackle any job including scribing lines, pitching a roof etc.