[jelder]

I have a lineman’s handset that was given to me in the mid 90s by a retiring friend. It’s probably at least 5 years older than that.

They’re extremely cool but useless now. They charge just by being used on POTS lines, and the clips, tiny beds of nails, can attach right into the middle of a cable leaving no noticeable mark.

Similar device on Wikipedia: https://en.wikipedia.org/wiki/Lineman%27s_handset