Double Wheel Liquid Timer

This colorful timer has two colorful wheels that spin as droplets of neon colored water through a funnel and catch on the wheels. A fun lesson in the density of liquids, this timer goes for about two minutes until you turn it over to start it again. Kids are fascinated by the properties of oil mixed with water and this makes an amusing gift that they can put on their desk and watch as the oil and water repel each other and spin the small wheels!

Features:

• Double wheel one-minute airtight timer
• Filled with clear oil and bright neon colored water which repel each other due to their different densities
• Excellent as a desk top toy, Christmas gift or as a novelty prize