Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 21
tion when the instrument was in use. Above this was a second hollow cylinder less than a foot in length, and enveloping a spindle of the same length, which was fastened to the large circular plate. The bottom of this second cylinder was a cog-wheel, of a diameter less than that of the circular… … Fig. 2. Fig. 1. cog-wheel. By turning this screw all of the instrument above the circular plate could be revolved in a horizontal direction around the stationary spindle. Above the square capital were two vertical blades or standards, about a foot long, and between them, at the Fig. 1 represents…
Engineering
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