ove and 8 inches below the horizontal diame- magnetic needle, costing perhaps 50 cents; both’of which ter. The discharging rods or terminals are constructed u of brass tubes, 1144 inches in diameter, and are fitted with terminal balls of different diameters, which are also interchangeable. The… … be constructed. Although the great machine which we illustrate in this notice was working in a workshop in which there inches, or a thousand square inches on the two disks investments may be considered permanent, as the was a steam engine and boiler at work, and conse- together. needle and wire can…
Internet Archive · Public domain (published before 1931). Free to use for anything.
