Bridgeport Series 1 Vertical Mill, servo power feed, 3x dro, power drawbar, 1981. Bridgeport Series 1 Vertical Mill, servo power feed, 3x dro, power drawbar, 1981 Price: US 4, Stock Number: #33933 Condition: Used "Used machine surplus to needs of local shop." Product Gallery – Click image for enlargement CLICK the ebay logo above ...