Length Measurement System for Winding Machines enables preset length of a spindle and the number of doffs completed to be viewed any time. The Length Measurement System is designed in such a way that the user can divide the total number of spindles into user defined groups. The Length Measurement System is provided with software key lock along with the system to prevent unauthorized programming. Length Measurement System for Winding Machines is user friendly and is suitable for mechanical and electromechanical stop motion depending on the availability of the signal from machine.