It is alternate model used to determine specific heat of a liquid by electrical method. Comprises a copper vessel 75 x 50mm (Ht x diameter) enclosed within an outer vessel of aluminium. A close fitting ebonite lid with rubber cork with hole for thermometer is provided with a wire stirrer and a pair of terminals connected to constantan wire heating coil. The resistance of coil 6.0 ohms and current 0.5 - 1A. Supplied without thermometer.