Instrumentation Engineering is the synergistic combination of mechanical engineering, electronic engineering, control engineering, systems design engineering and computer engineering to achieve measurements and control. Material science, sensors & actuators, optics, signal processing, statistics, computation, communication fields are involving in this branch. Health, Agriculture, Aviation, Safety, Security, Space, Manufacturing and Processing Sectors are the application of Instrumentation-Engineering.
Instrumentation involves both measurement and control functions. An early instrumental control system was the thermostatic furnace developed by the Dutch inventor Cornelius Drebbel (1572–1634), in which a thermometer controlled the temperature of a furnace by a system of rods and levers. In 1788 the Scotsman James Watt invented a centrifugal governor to maintain the speed of a steam engine at a predetermined rate.