细节
J. Carpentier
A fine lacquered brass Thomson-pattern astatic galvanometer, signed on the upper panel of the glazed case Ateliers Ruhmkorff J. Carpentier, Ingr. Constr. Paris and engraved No. 6485-2, the two copper-wound coils encased in shellac, with adjustable curved control magnet, with slow-motion adjustment in azimuth by tangent screw, the circular base with three adjustable screw feet, with supplier's original resistance chart dated 15 November 1897, contained in the original mahogany case with brass carrying handle - 13¼in. (33.7cm.) high
See Colour Plate
A fine lacquered brass Thomson-pattern astatic galvanometer, signed on the upper panel of the glazed case Ateliers Ruhmkorff J. Carpentier, Ingr. Constr. Paris and engraved No. 6485-2, the two copper-wound coils encased in shellac, with adjustable curved control magnet, with slow-motion adjustment in azimuth by tangent screw, the circular base with three adjustable screw feet, with supplier's original resistance chart dated 15 November 1897, contained in the original mahogany case with brass carrying handle - 13¼in. (33.7cm.) high
See Colour Plate