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Scientific American, Vol. 87, No. 7 (1902) (1902)

leaf 14

An illustration from Scientific American, Vol. 87, No. 7 (1902), 1902, leaf 14
Avousr 16, 1902. … few minutes the articles are thin film of metal. ‘hey can be plated in the ‘ FOOT-POWER Microscope for Projection. NEW IMPROVED usual way. ‘LAUNCH ew metal (8662) E. H. writes: I have need of track plate | with with keys | ADJUSTABLE to unlock a resistance of 25 ohms in the form of a strip standard…

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