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Scientific American, Vol. 43, No. 7 (1880) (1880)

leaf 3

An illustration from Scientific American, Vol. 43, No. 7 (1880), 1880, leaf 3
belonging to the station to a class of corresponding straight arms project upward, with a ring mon with the prismatic bars, which are being bent, they have twenty or more students, accompanied by the rector, Prof. fixed over and upon the points of each set of arms, the their weakest point in a… … Next to this machine -stand two for experimenting on ten- ute, and when a piece is put in or taken out the position of sion. Each has four heavy compound levers; at each de- the counter is simply registered in the proper book, thus giv- pression these stretch pieces of iron or steel until they…

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