EXPANSION OF LIQUIDS APPARATUS with 5 graduated on panel scales in mm. Complete with metal trough for the uniform and simultaneously heating of the 5 glass bulbs. To show different liquids have different thermal expansions. The frame has clamps to secure it to the trough and two cross members, the lower cross member having holes and upper tubules to locate the bulb tubes in bungs complete with 35 mm dia bulbs and 15 cms scales etc.