With two other wires connect the two copper plates with the galvanoscope binding-posts, and watch for any indication of current.
To test the voltage of batteries we must be able to control our galvanoscope.
Broadly speaking, a galvanoscope is an instrument that detects the presence of electric currents.
The galvanoscope merely indicates the presence of a current.
The galvanoscope may also be put into the circuit as in Fig. 113.
The galvanoscope (Fig. 72) is more than a mere detector of electricity.
At this moment the circuit of the galvanoscope, K, is closed, and we ascertain whether there is a deviation of the needle.
Fig. 62 shows how the connector should be slipped upon a thin piece of metal, M, like that on the galvanoscope, for example.
The older or moving-magnet type of galvanometer is similar to the galvanoscope mentioned in Art. 239.
On account of the peculiar arrangement of the legs, the galvanoscope can be made to stand firmly, even upon uneven surfaces.