Bridgeport (machine tool brand)
WEBA full view of a Bridgeport Series 1 Knee Mill. The head is mounted on the ram by joints that allow it to swivel in two directions. ... Bridgeport manual milling machines came in many types and sizes over the years, including (but not limited to) the C head (original), R head (heavy duty C head), M head, J head (and high speed, 5440 RPM version ...