Suitable to be used on milling and drilling machines for the realization of angle machining. It is made from stabilized engineering cast iron. The orthogonal T-shaped grooves on its surface make the clamping of the pieces to be machined easier. The tilting surface is blocked by means of two lateral braces. The manual positioning is made simple by a graduated sectior every 5° for 90°. On the support base there are some slots for the fixing screws and a groove parallel to the hinge.