how to measure the thickness of a thin wire using a pencil.

To measure the thickness of a thin wire with the help of a pencil and scale:

Wrap about 30 turns of the wire on a round pencil. Make sure that the turns are closely wrapped one against the other.
The wire so wound forms a coil. Measure the length of the coil with the help of a meter scale.The thickness of wire can be found by dividing the length of the coil by the number of turns.

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