MITCHELL NM1 lathe 8.5-inch centre height (sometimes branded "Kerry") Recognisable by a cluster of three spindle-speed selector levers grouped together in a triangular formation on the face of the headstock and a traditional Norton type screwcutting gearbox just over half the length of the headstock and with a ten-position sliding tumbler and a single lever on the right. 4 pages (an original copy may also be available).