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Scientific American, Vol. 10, No. 12 (1864) (1864)

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An illustration from Scientific American, Vol. 10, No. 12 (1864), 1864, leaf 0
. 2. The springs acting against nect with the relay instrument, sounder, ground the barrel. 3. The alternate arrangement of the tion of connections between the springs. ample, the pointer is set at III. it may indicate that springs. 4. The notches, with inclined edges, upon the plate or battery.… … are connected; if the pointer is now moved to VI. practically so many terminations of electrical con- England, after Mr. Browne had read his paper upon ductors or telegraph wires, and the several bars, B, the cylinder is also turned, anda new ~onnecting bar, the Metric System of Weights and…

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