Calorimeter, Joule’s, Double Wall, Brass

Comprises a smaller inner brass calorimeter vessel 85x70mm (height x diameter), enclosed in an outer vessel 120x100mm (height x diameter) with felt lagging in between them for minimizing heat loss. A close fitting bakelite lid is provided with a resistance coil mounted at the underside so as to be positioned sufficiently inside inner vessel and a pair of 4mm termils at the top for electrical connections. The lid has provision for thermometer and stirrer.