What might this be?

[acpeacemaker]

Hey, just curious if someone knew. I know a place where there is a lot of them and they are free. Some of them have quite a bit of heavy copper in the backs.Thank you - Andrew

 

[acpeacemaker]

One more

 

[macfixer01]

Here's some ducumentation on the contents of the piece. Now as to what such a device is used for I leave that up to you. It's called GOOGLE. Try it you'll like it!

http://tinyurl.com/3e9kset

macfixer01