A modern replacement for the older UM3508 "Mill-Drill" the Modig UBM-AM was, in essence, identical save for the use of a slightly different stand, the replacement of the insufficiently rigid round elevating column with a substantial cast-iron post (with wide dovetail-ways) and an increase in weight of 100kg. The new head-mounting arrangement was identical in concept to that used for many years by, amongst others, the American manufacturers of the small Linley and Vernon jig borers; however, instead of the traditional weight-within-the-column method of balancing the head (to ease the operator's job in repositioning it) the Modig used a trapezoidal screw thread operated by a handwheel connected through a pair of bevel gears. Unfortunately, the handwheel to move the head was positioned inconveniently at the back of the machine however, as an option, a 0.25hp power-feed attachment was available that lifted and lowered the head electrically at a rate of 300mm per minute.
The machine's operating limits and its specification were (apart from an increase to 525mm in the table-to-spindle-nose clearance) identical to the older model however, as a further concession to modernity, the Siemens electrical controls were mounted in a box on the end of a pendant arm that could be swivelled through 300 degrees.
The UBM-AM stood 1860mm high to the top of the pendant arm, was 1520mm wide over the ends of the table feedscrew handles and 655mm deep from the end of the head elevation handwheel to the front of the stand's foot. Weight, without accessories, was 550kg..