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round knurled nut
round knurled nut

round knurled nut

Date1780-1840
Inventory Number2007-1-0190
ClassificationTelescope Part
Subject
    Maker French
    Cultural Region
      Dimensions1.8 × 3.5 × 3.5 cm (11/16 × 1 3/8 × 1 3/8 in.)
      Material
        DescriptionThis is a round knurled nut to go on a large threaded bolt. It is typical of the nuts found on French reflecting telescopes, which are used to hold the tube to the mount.
        Signedunsigned
        2-foot Gregorian reflecting telescope
        2-foot Gregorian reflecting telescope
        Claude-Siméon Passemant
        Date: 1750-1769
        Accessories: dust cap
        Object number: DW0936
        6-inch refracting telescope
        6-inch refracting telescope
        Alvan Clark and Sons
        Date: 1910
        Accessories: shipping crate, terrestrial eyepiece, dust cap, mount and tripod (2003-1-0077b)
        Object number: 2003-1-0077a
        Clark patent equatorial mount, no. 6, on tripod
        Clark patent equatorial mount, no. 6, on tripod
        Alvan Clark and Sons
        Date: 1910
        Object number: 2003-1-0077b
        1-foot Gregorian reflecting telescope
        1-foot Gregorian reflecting telescope
        Benjamin Martin
        Date: circa 1750
        Accessories: filter, dust cap
        Object number: DW0810
        1-foot Gregorian reflecting telescope
        1-foot Gregorian reflecting telescope
        Claude Paris
        Date: circa 1750
        Object number: DW0811
        2-foot Gregorian reflecting telescope with split object glass micrometer
        2-foot Gregorian reflecting telescope with split object glass micrometer
        James Short
        Date: circa 1763
        Accessories: split object glass micrometer; spare secondary mirror in tin box (0002b).
        Object number: 0002
        Image Not Available for nuts and bolts
        nuts and bolts
        Harvard Cyclotron Laboratory
        Object number: 2025-04-0011aa
        Metal box of misc. lamps, shade, nuts, bolts, & screws
        Metal box of misc. lamps, shade, nuts, bolts, & screws
        Object number: RS1067
        1-foot Gregorian reflecting telescope
        1-foot Gregorian reflecting telescope
        Claude Paris
        Date: 1735-1745
        Object number: DW0978
        Green wooden storage box containing switchboard equipment and terminals
        Green wooden storage box containing switchboard equipment and terminals
        Date: 1890-1930
        Object number: RS0501
        2.5-inch, f/4.8 Gregorian reflecting telescope
        2.5-inch, f/4.8 Gregorian reflecting telescope
        Édouard Lutz
        Date: circa 1850
        Object number: DW0163
        steel bolts
        steel bolts
        Object number: 1998-1-1778