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MMD Archives August 1996 1996.08.12 03 Prev  Next Mercury Switches By Philip Jamison Since we're talking about things electrical, I wonder what the opinion is on open mercury switches. My orchestrion has two vials which, I assume, contained mercury. When the coin drops, a metal wire falls into the vials, completing the circuit. This switch is not enclosed. I have a european wall box that works the same way. One fellow told me that mercury evaporates, creating a poisonous gas around the piano! Is it best to use a micro-switch? Philip Jamison (Message sent Tue 13 Aug 1996, 00:00:24 GMT, from time zone GMT-0700.) Key Words in Subject:  Mercury, Switches

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