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adaptor collar
adaptor collar

adaptor collar

Date1850-1870
Inventory Number2007-1-0481
ClassificationOptical Accessory
Subject
    Maker French ?
    Cultural Region
      Place of Origin
        Dimensions6.4 × 6.4 × 0.7 cm (2 1/2 × 2 1/2 × 1/4 in.)
        Material
          DescriptionBlackened brass connecting collar, threaded on the exterior and interior. Finely knurled edges.
          Signedunsigned
          Curatorial RemarksAdaptor collars 2007-1-0480 and 2007-1-0481 were found together and almost thread together, but one is just a shade to large.
          adaptor collar
          adaptor collar
          French
          Date: 1850-1870
          Object number: 2007-1-0476
          adaptor collar
          adaptor collar
          French
          Date: 1850-1870
          Object number: 2007-1-0480
          adaptor collar
          adaptor collar
          Louis Jules Duboscq
          Date: 1850-1870
          Object number: 2007-1-0475
          threaded connecting collar
          threaded connecting collar
          J. Duboscq-Soleil
          Date: 1850-1875
          Object number: 2007-1-0519
          Image Not Available for right prism on telescope eyepiece adaptor
          right prism on telescope eyepiece adaptor
          American
          Date: 1925-1950
          Object number: 2007-1-0560
          Image Not Available for 8 assorted lenses in threaded collars
          8 assorted lenses in threaded collars
          French
          Date: 1875-1925
          Object number: 2007-1-0342
          adaptor tube
          adaptor tube
          American
          Date: 1875-1900
          Object number: 2007-1-0482
          adaptor tube
          adaptor tube
          American
          Date: 1875-1900
          Object number: 2007-1-0483
          round frame
          round frame
          French
          Date: 1850-1900
          Object number: 2007-1-0485
          3 eyepiece holders
          3 eyepiece holders
          English
          Date: 1850-1875
          Object number: 2007-1-0363
          box of accessories for Bromfield's solar microscope
          box of accessories for Bromfield's solar microscope
          English
          Date: circa 1745
          Object number: 1169c
          condensing lens in cell
          condensing lens in cell
          French
          Date: 1875-1900
          Object number: 2007-1-0341