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Scientific American, Vol. 48, No. 4 (January 1883) (1883)

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An illustration from Scientific American, Vol. 48, No. 4 (January 1883), 1883, leaf 0
forward; and when the wheel In order to obtain such marks of varying depth, a counter- are to be made of it, and which may reach 60 degrees below ceases to revolve, the diamond at once falls with extreme poise, capable of approaching or receding from the rod sup- zero. Such is the machine in… … GIFEABD'S lUPSOVED ICE AXD COLD AIR MACHINE. © 1883 SCIENTIFIC AMERICAN, INC

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