For determining specific heat, heat of fusion and heat of vaporisation. Consists of two polished spun aluminium vessels, i.e. an inner calorimeter (h x d), 80 x65mm and an outer calorimeter (h x d), 140 x 10omm. Includes a plastic ring for seating the inner calorimeter, a stirrer, and a plastic lid for outer vessel. The lid has two holes for the thermometer and the stirrer. Supplied without the thermometer.