LOT 0224 Monocular Compound Microscope by Crichton, c. 1840
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Monocular Compound Microscope by Crichton, c. 1840 John Crichton, England. Engraved "Improved Compound Microscope by Crichton, 112 Leadenhall St. London", brass, folding tripod base, support pillar base with compass joint opening for the 1 ¾-in. concave mirror, unusually deep sprung stage, 2-in. cylinder body mounted on cantilever arm, triple-lens system with Huygenian-type eyepiece, two plano-convex lenses and biconvex field lens, rack-and-pinion focusing to the inner tube, height 17 in. Accessories including 7 objective lenses (nos. 0, 1, 2, 3, 4 and 6), Lieberkuhn, live box, 2 bone slide, 6 wood slide, 3 with opaque objects, stage forceps and separate stand for the bull's-eye condenser and candle holder, in fitted mahogany case with detachable tray and brown velvet lining in lid. Monokulares Mikroskop von Crichton, um 1840 John Crichton, England. Graviert "Improved Compound Microscope by Crichton, 112 Leadenhall St. London", Messing, klappbares Dreifußstativ, kippbare Säule mit Öffnung für den Hohlspiegel Ø 4 ½ cm, Tisch mit großer Stahlfeder, Tubus Ø 5 cm, Drei-Linsen-System, bestehend aus Huygenian-Typ-Okular mit zwei Plankonvexlinsen und Bikonvex-Feldlinse, Zahnstangenfokussierung am Innentubus, Höhe 43 cm. Zubehör: 7 Objektive (Nr. 0, 1, 2, 3, 4 und 6), Lieberkühn, Lebendzelle, 2 Objektträger aus Bein, 6 Objektträger aus Holz, davon 3 mit undurchsichtigen Objekten, Pinzette und separater Ständer für den Kondensor und den Kerzenhalter, in dazugehörenden Mahagonikasten mit herausnehmbaren Tablett und braunem Samtfutter im Deckel. Start Price: EUR 900
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