The "Automil Duplex" must have been an especially low-volume model and was built up from standard Centec components, mounted on a wide stand, and arranged so that parts could be milled simultaneously on opposing ends. Each spindle was driven by a 1 h.p. motor, the table had 14-inches of travel, with a fast traverse in both directions, and a stepless feed rate from 1 to 400 inches per minute.