In article . net,
Michelle P wrote:

According to the pictures it looks like a Flux gate. It measures earths
magnetic field. It is old.
Most likely 28 volts DC. Power to the wrong pins will ruin the unit.
Michelle

Can I probably poke around with a DVOM without hurting it?

--
B.B. --I am not a goat! thegoat4 at airmail.net
http://www.sorryeverybody.com/