This Galvanoscope is not listed in the various editions of Davis' Manual of Magnetism in my collection, but it certainly looks like a piece of Davis apparatus. The cut shows a Davis astatic galvanometer of the same general construction being used to detect the current produced by a thermo-electric junction. It is not completely astatic, as Davis points out that the instrument should first be oriented with the needle in the same plane as the coil. This example is at the University of Mississippi museum.

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