Human beings have demonstrated amazing ingenuity in designing machines for accomplishing things with less wear and tear upon themselves. Since most machines require human control, they must include control devices through which people make their presence known to machines. These controls must be designed to be suitable for desired control actions in terms of sensory, psychomotor and anthropometric characteristics of the intended user. The design of these controls involves many product components, such as shape, size, force required to operate, resistance and grip. The choice of grips is dictated less by size and shape but by the task that is to be accomplished. Hand adopts different grips to adjust changing force or torque conditions. A single control knob design doesn’t serve all the purposes, and the design must evolve based on the application. This project aims at designing hand-operated control knobs based on different kinds of hand grips to enable the user to sustain productive work in a safe manner.