Nvis 6054 Joule’s Constant Measurement Setup (by electrical method) is useful to determine the mechanical equivalent of heat. It consists of Calorimeter to isolate water thermally from the surrounding and Measurement Unit with LCD to display Voltage, Current and Time. According to Law of Conservation of Energy, electrical energy provided is equal to heat produced if very less heat is lost through the system. Current is passed in a coil to rise the temperature of known mass of water in a calorimeter. By measuring heat produced corresponding to the provided electrical energy, value of Joule’s Constant is determined.