Sixty feet of 22 gauge polyurethane coated copper wire.
The green insulation is easy to distinguish from the
bare copper, so it is easy to scrape off just the right
amount when building the Simple Motor project.
Also great for winding the antenna coil of the Portable
Crystal Radio, and the perfect length for an antenna for
the Simple Crystal Radio project.
This makes a good sample for Copper
in your collection of samples for the Periodic Table
of the Elements, especially if you sand off the insulation.
