The item in photo is a coil of 20-gauge copper wire (with enamel or
varnish insulation), is 12 inches in diameter, weighs close to 5
pounds and has a resistance of about 25 ohms. The coil is wrapped with
electrical tape. Appears to have been homemade. Found it in a box of
electrical odds & ends which I rescued, to keep some potentially
good (?) stuff from going to the landfill.
http://www.flickr.com/photos/ghb624/2587999848/
