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A motor will be used to make a weather vane.
The weather vane is a fine piece of 18th century ironwork.
The Kestrel 1000 & 2000 are tough, pocket-sized rotating vane anemometers.
The barbs possess further branches called the barbules, and adjacent barbules are attached to one another by hooks which stiffen the vane.
Most children were able to produce simple procedures to turn on lights, sound the alarm and turn the weather vane.