To measure the diameter of a thin wire, use a standard measuring tape, must be wound on the nail 10 or 20 coils, measure the length of this winding and divide the result by the number of turns. The result obtained will be the exact diameter of the wire. Thus, we measure thin wires with a diameter of up to 1,5-2 mm. We can also measure the diameter of a string or line in this way. But let's always remember, wind the wire and string tightly, one scroll next to the other, no backlash.
