Physical DescriptionScrew-barrel Microscope with Accessories. Rolled brass, ground and polished lenses, blown glass tube. (a) Brass screw-barrel microscope. Cylindrical shape with threaded barrel, wire spring, and glass lens. (b) Circular lens in threaded brass frame, stamped "1". (cd) Circular lens in threaded brass frame, stamped "2" with dome cap. (ef) Circular lens in threaded brass frame, stamped "3" with dome cap. (g) Brass specimen plate with three circular glass slides. (h) Rectangular brass frame with colorless glass window for specimen plate. (i) Brass tweezers. (j) Colorless blown glass flask with cork stopper. (k) Custom lidded wooden case covered in black sharkskin and lined with red velvet. Provenance
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