Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 39
he front binding-post; or a shorter section, and hencelower resistance, for weaker pressure, indicated in twenti-eths of a volt on the inner scale, when connection is madewith the rear binding-post. Back of the right binding-post is shown the contactkey referred to above, by which the circuit can… … Fig. 5. Ammeter.—In Fig. 5 is shown an instrument of simi-lar construction, but much simpler, by which the volumeof the electric current is measured. This instrument hasno resistance coil, and only one scale, and hence requires only the two bind-ing-posts shown onthe right. Its cop-per coil is of…
Electricity
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