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Scientific American, Vol. 68, No. 1 (1893) (1893)

leaf 4

An illustration from Scientific American, Vol. 68, No. 1 (1893), 1893, leaf 4
most convenient, as any length of wire can be used in tions, the signs indicating each It is made by the Hurlbut-Rogers Machine Company, connecting it with the light frame, and the latter may letter of the code are simultane- of South Sudbury, Mass., who will give any further be occasionally, as… … area, 1 foot 6 inches is taken up by the key- the wagon filled with appa- “TELEPHOTOS.” board, with 87 letters, numerals, etc., the re- ratus will not exceed 1,500 maining portion being taken up by the several pounds. An attachment for thousands of electrical connections required. signed a contract…

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