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Scientific American, Vol. 92, No. 1 (1905) (1905)

leaf 13

An illustration from Scientific American, Vol. 92, No. 1 (1905), 1905, leaf 13
t4 January 7, 1905. … ' Freight SENSITIVE LABORATORY BALANCE. Paid? { Stacker, hay, H. W. Swadley ............ 778,431 Stamp affixing machine, J. P. & S. Farmer 778,744 By N.. Monroe Hopkins. This “built-up” laboratory balance will weigh up te one pound and will turn with a Stamp, time, J. F. Tenney ..............…

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