1875 No guess yet, but when faced with an unknown device with an electrical
connection I'd look at the other end of the cable. How many wires? What
size wires? What type? Just 2 heavy wires might indicate a lamp or heater.
Several light wires might indicate an instrument. I'd also check for
continuity/resistance among the cable wires and to the contacts on the black
Yesterday I sent an email to the owner of this device asking about the wires
but I haven't heard back yet, I'll post their reply when I get it.
Still not sure about number 1875 but the rest of them have been answered
correctly this week:
1878 is ALMOST that. It's a stereo "audio zone" speaker for a museum
display. The thing is almost inaudible, except when standing directly
under it. Then, you get a perfect stereo presentation of the soundtrack.
1873 is a watchmakers tool
God knows what it is for. Poising balance wheels or setting dial feet or
Those guys have a billion different tools for each part of the watch
Paul K. Dickman
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