Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 436
ASSOCIATION OF ENGINEERING SOCIETIES. 378 by Mr. William H. Foss, who has been connected with the survey from the beginning. It is simple in construction, its operation easily understood and the final results can be observed after three mechanical movements. … The apparatus is illustrated in the accompanying drawings, in which Fig. I shows the apparatus in plan. Fig. 2 is a section taken on line X X of Fig. I. Fig. 3 shows in elevation parts of the ver- tical scale. Fig. 4 is a cross-section taken on line y y of Fig. 3.-
Engineering
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