Turret lashes are strictly production machines. They are designed to provide short machining time and quick tool changes. Two types of semiautomatic turret lathes require an operator in constant attendance:the ram type(Figure l-7)and the saddle type(Figure l-8). Small,precision,hand-operated turret lathes (Figure l-9)are used to produce very small parts. Automatic bar chuckers require little operator action.