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panel with slit
panel with slit

panel with slit

Datecirca 1893
Inventory Number1996-1-0483c
ClassificationOptical Accessory
Subject
    Maker Queen & Company 1893 - 1912
    Cultural Region
      Dimensions10 x 17.2 x 0.1 cm (3 15/16 x 6 3/4 x 1/16 in.)
      Material
        DescriptionA sheet of brass is shaped like the profile of a house and has a black finish. There is a slit 6.4 cm long and .6 cm wide. In each corner of the plate on the same side as the signature, there is a countersunk hole. On the reverse side, three of these holes are marked by stamped numerals: 11, 44, and 45.
        Signedin cursive by slit: Queen & Co. / Makers / Phila
        ProvenanceJefferson Physical Laboratory, prep room; transfer to CHSI in 1967.
        Historical AttributesUsed by the prep room of the Jefferson Physical Laboratory of Harvard University.
        diffraction apparatus parts
        French
        Date: 1850-1900
        Object number: 2007-1-0537
        adjustable slit
        French
        Date: 1850-1900
        Object number: 1996-1-0717
        assorted microscope slides
        Charles X. Dalton
        Date: 1775-1900
        Object number: 1998-1-0797
        precision screw for adjustable slit or micrometer
        American
        Date: 1875-1900
        Object number: 1996-1-0611
        1-foot Gregorian reflecting telescope
        Claude Paris
        Date: 1735-1745
        Object number: DW0978
        Portable darkroom closed for travel.
        Richard W. Thomas
        Date: circa 1861
        Accessories: bottle and beaker (1998-1-1634a); hydrometer and manual (1998-1-1634b)
        Object number: 1998-1-1634
        globe stand made from electrical box
        American
        Date: circa 1890
        Object number: 1997-1-1822b
        optical tube, or tailpiece
        American
        Date: 1900-1950
        Object number: 2007-1-0101
        Bloud-type magnetic azimuth, ivory diptych sundial
        Jacques Guerard
        Date: mid 17th-late 17th Century
        Object number: 7508
        replica planispheric astrolabe by Bos 1597
        Johannes Bos
        Date: late 19th Century
        Object number: DW0595
        rectangular ivory diptych sundial in form of a book
        Thomas Ducher
        Date: 1620-1645
        Object number: 7579