Tri and mitre square with a wide range of uses due to its millimetre and angular scales. Marking tool allows user to easily take measurements and transfer them onto beams, pipes and three-dimensional workpieces. Rectangular geometry allows for precise markings around corners, making it ideal for accurately transferring mitre angles onto two sides of a workpiece. With limit stops at 45° and 90° angles and a scale for free angles between 0° and 90°. Provides user with a reliable marking gauge when marking parallel lines. Equipped with a drill gauge for quickly determining the diameter of a drill bit.