I had a student bring this in to me today and I'd like to find out what it is. He found it in the attic of a house. The brass piece screws on to cover the part sticking up in the middle. I'm guessing a telegraph relay, but that's just a guess.
Laura Jenkins
Instructor
NECA/IBEW Electrical Training Center
![[Linked Image]](https://www.electrical-contractor.net/Nostalgia/WhatIsThis.JPG)
[This message has been edited by Webmaster (edited 05-25-2005).]
