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细节
Leach's patent projecting microscope no. 227
W. I. Chadwick, Manchester; comprising a lacquered-brass microscope attachment with rack and pinion focusing, lacquered-brass lens barrel, supplementary lenses and tibes, in a fitted wood box
W. I. Chadwick, Manchester; comprising a lacquered-brass microscope attachment with rack and pinion focusing, lacquered-brass lens barrel, supplementary lenses and tibes, in a fitted wood box