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
ON ASPHALT WITH A BOAT MOTOR
After reading the title, you might think: a motor is being repaired. Nothing of the sort. This patially "Surf" in excellent condition. But it is not set on the boat, and on the original...
FOR ALL ELEMENTS
SMALL SPOOL, BUT PRECIOUS! Among multipurpose internal combustion engines, created by our readers, still have not found structures with the spool naturally. Meanwhile, this scheme...