Calorimeter Cups - Pair.

Outer cup 75x100mm DxH, with styrene foam insulation pad in the bottom of the cup to support and centralise a small calorimeter cup 50 x 75mm DxH. 

The air space between the two cups is the insulation medium. 

The mouths of the two cups are level so that a single plastic lid engages and holds both cups aligned. 

A hole is provided in the centre of the lid to permit a thermometer to be inserted.