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The Touch Thermometer is specifically designed for visually impaired persons. Drawing lessons from the internal combustion engine, it changes the reading way of thermometer, and makes itself more suitable for users with special needs.
It consists of two main parts: the tube and the piston inside the tube. When the thermometer is heated, the mercury loaded in the tube begins to expand, and pushes the piston to move outside the tube. On the surface of the piston there is projecting braille and scale marks. Without using eyes, the users only need to reach out their fingers and touch the scale marks, and they will know the exact temperature.
Zijingang Campus of Zhejiang University