ed to form projections one edge of the compass is arranged a permanent bar which span the rounded portion of thesliding bar. To magnet, which is held in its place by two pins. The lift the coupling pin for uncoupling, the sliding block must be forced forward in the drawhead, which is ef- bar magnet… … in the diagram, the current passes through the trough to form a crank which connects with an arm attached only. Arranged in this way, the galvanometer is to the sliding block, as shown in Figs. 2 and 3. When adapted to the measurement of heavycurrents. When the sliding block is forced forward, it…
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