ce raw frame movable, into which the current arrives by the sus- which extends from the side of the socket to an aperture bones to three-quarter inch, five-eighths inch, and one-half pension wires, and leaving the needles fixed. passing down through the socket, as indicated in Figs. 8and inch… … tremities of the galvanometer are connected by a shape of a friction clutch on the main driving shaft. This is found of great service. Occa- wire of little resistance, the frame, having de- sionally hard substances of large size are accidentally If we examine the position of the lines of force with…
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