Joule's calorimeter

Specifications

It is composed of an inner vessel of about 300 mL of capacity contained inside and outer vessel of about 900 mL both of them made of aluminium and separated by an isolating material that minimizes heat loss.
The set is closed with an acrylic transparent lid provided with a resistance at the bottom to be conveniently introduced in the vessel and two 4 mm banana sockets for electrical connection.
The lid is also provided with stirrer and a hole to put a thermometer (thermometer is not included).