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A calming addition to the classroom, or great as a desk distraction at home or in the office, this Double Neon Liquid Timer demonstrates the mechanics of un-mixable liquids of different densities.
- Double Neon Wheel Liquid Timer
- Colour: Multi
- Turn the time over & watch the neon blue liquid spin the paddle wheels drop by drop & fill the chamber below
- Dimensions (approx. cm): 12 (H) x 5.5 (W) x 4 (D)
- Materials: Plastic
- Not suitable for children under 3 years
- Country of origin: China