[NJARC] Bar Magnet wanted

[John Dilks K2TQN]

Hi Rob,

you don't see them around in stores anymore.  You used to be able to 
pick them up in hardware stores.  I'm told Edmond Scientific has them on line.

73, John

At 05:13 AM 1/3/2009, you wrote:
>Hi All,
>I am doing a program on telephony at a school and would like to 
>recreate the device at our museum with the microammeter and bar 
>magnet, to help explain how a dynamic microphone works.  Does anyone 
>have a bar magnet kicking around, or know a good source for stuff 
>like that.  Will also need a zero-center microammeter.
>
>Thanks,
>Rob