This course basically deals with the study of Mechanical System Design subject most probably related to the Mechanical Engineering stream. The course will provide the design procedure and Understanding specifically for the different machine tool gearboxes. It will boost the knowledge of the learners in the field of Machines, Shop floor Instructors, Mechanical Engineering Graduates and industry persons associated with machine tool design. The course provide the brief idea about the general procedure for the machine tool gearbox including the basic contents such as introduction to multispeed gearbox design, Terminology of machine tool gear box, Different laws of stepped regulation focusing on geometric progression, kinematic diagram of gear box, structural formulae & structural diagrams, ray diagram & speed chart, gearing diagram and speed deviation diagram with the general guidelines for gearbox design. Gearbox generally is provided in case of speed and torque variation during machining operations such as in lathe machines, milling machines, drilling machines etc. Multispeed Gearbox Design comes into picture when breakdown takes place in machines and fault diagnosis is to be carried out if machine fails due to speed regulator. So to have thorough knowledge of multispeed gearbox design and convenience in maintenance of different machines this course will play a vital role.