Smart & Brown Model M 4" x 18" This lathe was based closely on the pre-war German Boley L3/L4 (with the leadscrew disposed centrally under the bed) but in this case a later model which S & B modified to include a new apron with a power shaft at the front of the bed to drive the sliding and surfacing feeds. The cabinet stand, as well as various guard covers on the lathe, were cast in aluminium; the cabinet contained the three speed gearbox and this, together with the two-speed belt drive to the headstock and back gear, gave a total of 12 speeds ranging from 39 to 1430 rpm.
Built in an Mark 1 and 2 versions the first model appeared during late 1946 and the later - considerably modified - in 1948. Production ran, it is believed, until 1959.