There's no moving parts, other than the screws.Dry contacts ... for what ?
That's how I was leaning, but it was on the door jam.Be my guess that it's a telephone demarc. Does it say Cook, Kellogg, Stromburg, Carlson, or Westinghouse on it?
Help me out. I thought any point where the TELCO service terminated on private property was the demarcation? It's actually a specific type of equipment?
I did not know that. So to clarify, that thing in OPs picture may have been the termination block for the outside line, but it wasn't a demarc because that concept didn't exist....Prior to divestiture in 1984, the Regional Bell Operating Companies were responsible for everything related to the telephone service (service drop, protector, customer premise wire, jacks and phones)....