HARRISON Lathes Models 12-inch and 13-inch swing L6 Mk. 3 - also badged as the 155 and 165 and distinguishable from earlier models by a flat front face to the headstock a long, single upward pointing handle on the face and two spindle-speed change levers on the top, a third control shaft control rod below the leadscrew and power-feeds shaft, a screwcutting gearbox with a sliding selector control that indexed into a row of holes. The gearbox had either two thumb lever along the top edge (English threading) or three thumb levers (metric version).
This page displays all the content on the website associated with the '13-inch swing' model. Numeric models include all prefixes, such as 'Number', 'Mark', 'Size' etc.