The crossover timer is an entertaining fun gadget for young and old. Timer contains coloured fluids of different densities.
Turn the timer over and watch the liquids cross over.
The coloured liquid won't mix with our dissolve into the clear liquid. Because they don't mix we can observe gravity at work with the heavier coloured liquid always flowing to the bottom of the timer
A calming and mesmerising device that can be used by those affected by sensory overload.
Ages 3 Yrs+
