adjustable slit
Date1850-1870
Inventory Number2007-1-0467
ClassificationSlit
Subject
Maker
Louis Jules Duboscq
French, 1817 - 1886
User
Harvard College
founded 1636
Cultural Region
Place of Origin
Dimensions4.3 × 10.6 × 9.9 cm (1 11/16 × 4 3/16 × 3 7/8 in.)
Material
DescriptionLarge brass cap--with outer diameter of 9.1 cm (not counting the knurled edge)--has two large, opposing knife edges mounted on the top over an opening. Tension on the spring to close the slit is operated by a knurled screw on the side of the cap.
Signedon knife edge: J. DUBOSCQ / PARIS
Curatorial RemarksThis object may be part of a collection of miscellaneous items attached to a slip of paper: "From Mrs. Weston Howland. November 1945. Uncatalogued portions of some piece of scientific apparatus, about the former ownership or use of which nothing was known."
Louis Jules Duboscq
Date: 1850-1870
Object number: 2007-1-0479
