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describe an invention that uses indicators
The new invention was popular because there are many various uses for it.
Cold packs, for bruises are one invention.
various uses of this train invention
patent
conduction i think
A evaporator
It uses water and horse power and stuff
Millions of people use the invention of a skateboard. Skateboards are used by many ages of people but are most often used by children.
The answer to that question is a compass.
It is used for weather and a few other uses.
Electrical appliances like those which uses batteries..for more detail log on to ask.com