A lathe with a lead screw and a drawing spindle , comprising a main slide movable back and forth manually on a machine bed in a z-direction and a cross slide movable back and forth manually on the main slide in an x-direction, which runs perpendicularly to the z-direction, wherein for a manual movement of the main slide a first handwheel is provided, wherein for a manual movement of the cross slide a second handwheel is provided, wherein, if the first handwheel and the second handwheel are actuated, the corresponding slides are moved exclusively mechanically, i. e. without interpositioning of electric drives, a first drive with a first motor which is connected or can be connected via a first gearing to a main spindle , a second drive with a second motor which is connected or can be connected via a second gearing to a lead screw and/or a drawing spindle , a first rotary angle detection device for detecting a first rotary angle of the first drive or the main spindle , a second rotary angle detection device for detecting a second rotary angle of the second drive or the lead screw and/or the drawing spindle , and a controller connected to the first drive and the second drive and also the first and second rotary angle detection device , which controller is designed such that a first rotary movement of the main spindle can be coupled with a second rotary movement of the lead screw in accordance with a predefined gear ratio, wherein the controller is designed to perform a thread-cutting mode in which a gear ratio between the main spindle and the lead screw corresponding to a thread pitch predefined by a user is set by means of a predefined algorithm depending on said thread pitch, wherein the controller comprises a first switch means to be operated manually for activating the gear ratio and wherein the controller comprises a display means for displaying the presence and the absence of the gear ratio. a main slide movable back and forth manually on a machine bed in a z-direction and a cross slide movable back and forth manually on the main slide in an x-direction, which runs perpendicularly to the z-direction, wherein for a manual movement of the main slide a first handwheel is provided, wherein for a manual movement of the cross slide a second handwheel is provided, wherein, if the first handwheel and the second handwheel are actuated, the corresponding slides are moved exclusively mechanically, i. e. without interpositioning of electric drives, a first drive with a first motor which is connected or can be connected via a first gearing to a main spindle , a second drive with a second motor which is connected or can be connected via a second gearing to a lead screw and/or a drawing spindle , a first rotary angle detection device for detecting a first rotary angle of the first drive or the main spindle , a second rotary angle detection device for detecting a second rotary angle of the second drive or the lead screw and/or the drawing spindle , and a controller connected to the first drive and the second drive and also the first and second rotary angle detection device , which controller is designed such that a first rotary movement of the main spindle can be coupled with a second rotary movement of the lead screw in accordance with a predefined gear ratio, wherein the controller is designed to perform a thread-cutting mode in which a gear ratio between the main spindle and the lead screw corresponding to a thread pitch predefined by a user is set by means of a predefined algorithm depending on said thread pitch, wherein the controller comprises a first switch means to be operated manually for activating the gear ratio and wherein the controller comprises a display means for displaying the presence and the absence of the gear ratio. <EOS>