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  • Complete Newton & Co. 10-inch Ebony Quadrant

    Lot: 283
    Sold for: $1,230$1,000

    Complete Newton & Co. 10-inch Ebony Quadrant, South Fleet Street, London, pierced ebony frame with brass index arm, vernier and lock-down screw, cross bar plaque reads "Newton & Co. S.Fleet St. ...

  • 15-inch Ebony Octant

    Lot: 1121A
    Sold for: $431$350

    15-inch Ebony Octant, 19th century, with ivory scale calibrated 0-90, brass index arm, locking thumbscrew, and ivory vernier reading 0-20, sighting pinnula, mirror magnifier, sun shades, unmarked ...

  • J. Hughes 10-inch Ebony Octant

    Lot: 149
    Sold for: $490$400

    J. Hughes 10-inch Ebony Octant, London, with brass arm, bone scale calibrated 0-100 with thumb screw vernier, maker's plate engraved J. Hughes. London, three sun shades, horizon mirror and peep ...

  • Ebony and Ivory Diptych Sundial

    Lot: 276
    Sold for: $711$600

    Ebony and Ivory Diptych Sundial, unmarked, mid 19th century, the octagonal dial with Roman chapters, engraved scroll work around the perimeter, inset latitude adjustment on the underside of the lid ...

  • 10-inch Radius Ebony Octant by Spencer & Company

    Lot: 294
    Sold for: $830$700

    10-inch Radius Ebony Octant by Spencer & Company, London, with bone maker's plaque marked Spencer & Co. London, scale calibrated 0-105, brass index arm with vernier scale divided 0-20, brass thumb ...

  • 11-inch Brass and Pasteboard Armillary Sphere

    Lot: 400

    11-inch Brass and Pasteboard Armillary Sphere, France, probably Delamarche with later additions, with Sun and Moon discs revolving around the (missing) Earth, four rings with red-painted rims ...

  • Drafting Instruments

    Lot: 152
    Sold for: $588$500

    Drafting Instruments, a brass parallel rule with protractor by Wm. Helfrfricht, Philadelphia; a French brass sector; a 9 1/4-inch brass parallel rule with engraved links and central rosettes; a ...