Comprising two iron casted stand of 180mm height joined by two chrome plated rods, with an expansion rod, length 380mm, fixed on one stand and resting on a Friction Pointer placed at the other. With graduated scale 0-90° with 3 expansion bars of Iron, Aluminium and Brass.

For determining maximum density of water, made of G.I. Sheet cylinder 50mm dia x 300mm height mounted on a base having 2 tabulators for thermometers, with a gallery of 60mm x 150mm for placing mixture of ice and salt. The respective temperatures of water at the top and bottom of the inner cylindrical vessel are measured over a period as the water cools. Complete with bungs and thermometers.