The Pietro Carnaghi ATT vertical lathe is designed and built in a compact form, with an extremely rigid thermosymmetric structure, assembled on a double-base designed for two tables. Another structural element is the crossrail, specifically designed to support two carriages, one for each table. The unique design of this solution stems from the need to fit the machine into a small space, significantly increasing productivity by allowing a single operator to handle two workpieces simultaneously.