* Multiple colours, chosen at random
The Hourglass Timer contains two dolphins, one at either end of the tubes. As the oil drips through, one dolphin rises and the other falls.
The Sensory Sensations Hourglass Timer is a calming and mesmerizing device suitable for all ages that also demonstrates some basic scientific principles. Each timer contains coloured fluids of different densities. To create the droplets, the liquids inside the timer must be mutually insoluble. This means that the coloured liquid wont mix with or dissolve into the other coloured liquid or the clear liquid. Because they don't mix, we can observe gravity at work with the two heavier coloured liquids flowing to the bottom of the timer.
Liquid timers may also help with concentration - the visual stimulation of the predictable, rhythmic and flowing motion provides a subtle, engaging opportunity to refine visual tracking skills.
Entertaining toy for all ages, everyone will find themselves entranced in watching it. They are a great addition to every sensory box.
Keep out of reach of children under three years old. Please note, colours very and one random colour will be sent. Warning: These products are made from acrylic plastic. They will not withstand being thrown or dropped onto hard surfaces. They contain mineral oils which may smell strongly if the product breaks. The contents are not toxic and are approved to Australian safety standards, however please under supervision to ensure safe use of the product.