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lead hemisphere with brass knob handle
lead hemisphere with brass knob handle

lead hemisphere with brass knob handle

Date1800-1850
Inventory Number0132c
ClassificationLead Hemisphere
Subject
    Maker English ?
    User Department of Physics, Harvard University founded 1884
    Cultural Region
      Dimensions2.7 × 3 × 3 cm (1 1/16 × 1 3/16 × 1 3/16 in.)
      Material
        DescriptionA pair of lead hemispheres with brass knob handles. The brass knobs have circular caps with ridged edges and screw into the sphere.
        Signedunsigned
        FunctionThese would most likely have been used as weights, the screws on top perhaps fastening a string or wire, but their function is uncertain.
        ProvenanceFrom the Department of Physics, Harvard University.
        lead hemisphere with brass knob handle
        lead hemisphere with brass knob handle
        English
        Date: 1800-1850
        Object number: 0132d
        lead hemisphere with brass handle
        lead hemisphere with brass handle
        English
        Date: 1800-1850
        Object number: 0132a
        lead hemisphere with brass handle
        lead hemisphere with brass handle
        English
        Date: 1800-1850
        Object number: 0132b
        Magdeburg hemispheres
        Magdeburg hemispheres
        English
        Date: 1810-1880
        Object number: 1998-1-0153
        Magdeburg hemispheres
        Magdeburg hemispheres
        W. & S. Jones
        Date: 1800-1820
        Object number: 1998-1-1223a,b
        Magdeburg hemispheres
        Magdeburg hemispheres
        Joseph M. Wightman
        Date: 1840-1850
        Object number: 1998-1-1221
        Magdeburg hemispheres
        Magdeburg hemispheres
        Benjamin Martin
        Date: circa 1765
        Object number: 0084
        vacuum hemispheres and 5 brass fittings
        vacuum hemispheres and 5 brass fittings
        American
        Date: 1900
        Object number: 1998-1-0658
        3-inch pocket terrestrial globe in case lined with celestial hemispheres
        3-inch pocket terrestrial globe in case lined with celestial hemispheres
        James Ferguson
        Date: circa 1760
        Accessories: case
        Object number: 1998-1-1416
        Image Not Available for grey storage box containing knobs, handles, and tuning diials
        grey storage box containing knobs, handles, and tuning diials
        Date: 1890-1930
        Object number: RS0496
        Powell achromatic compound microscope
        Powell achromatic compound microscope
        Hugh Powell
        Date: 1841
        Accessories: oculars (2); objectives (3): 1/2, 1/8, 1/4 with attachable Lieberkühn; stage slide holder; stage fish plate holder; X-Y mechanical stage; fish plate; prepared slides (2); plain glass slides (2) and cover slips (2); box of cover slips; sponge; cotton bag; folding scalpel; fish plate; mount for stage forceps; fishhook; assorted hardware; case
        Object number: 1164
        Leyden jar with brass hemisphere
        Leyden jar with brass hemisphere
        L. E. Knott Apparatus Company
        Date: 1900-1930
        Object number: 1997-1-1405