These transparent colour timers use the flow of oil and water droplets to show the passage of time. Children are fascinated by the different effects they can observe as the process takes place.
The Liquid Timer Set contains 3 timers measuring 70 x 45mm and the bubbles fall from top to bottom.
The Bubble Timer Set contains 4 timers measuring 65 x 45mm and the bubbles erupt from the bottom to the top!
The Spiral Tube Set contains 3 timers measuring 150 x 50mm. Turn the tubes upside down and watch the spherical droplets “walking “ in a line down a spiral staircase!
LQT-04 all 3 sets of liquid timers for £20.95.