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Old 14th Jul 2022, 8:08 pm   #14
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 7,525
Default Re: Old coil switch thing. Identified as a Ruhmkorff induction coil.

Hi Philip, make sure you dry it out well before attempting to operate it.
It looks a lot like some of the home made units described in some of my Model Engineer booklets from 1910

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