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Scientific American, Vol. 57, No. 3 (1887) (1887)

leaf 15

An illustration from Scientific American, Vol. 57, No. 3 (1887), 1887, leaf 15
teed. DR. SCOTT, 843 Broadway, N. Yao TECTS’ AND BUILDERS’ EDITION is issued TEST RECORDING APPARATUS.-- To Business Men. THE, TEST OF THE ROADS monthly. $2.50a year. Single copies, 25 Description. by J. H. Wicksteed, of a new testing ma- FOR TEN YEARS, chine, with autographic recording apparatus.…

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