To know the exact diameter of the wire will fail, and no micrometer or Vernier caliper, if you use … normal range.
This is quite tightly wound on the rod a small number of turns of wire, then measure the width of the winding divided by the number of turns: the number obtained will be the required diameter.
Recommend to read
THE DRAFTSMAN NOTE
A short pencil is more convenient to work with the knob-extension of thin-walled tube. But in this case to use the stylus fails. Offer stick "Shorty" end of another pencil. The...
TABLE-CLAMSHELL
After construction work in the suburban area is over, usually remains a lot of unused material: bars, rods, metal profiles, pipes. All this will be useful in further equipment built...