Franz Schmidt & Haensch Saccharimeter
name: label: maker
content: Franz Schmidt & Haensch
notes: label: Description
content: Half-shadow polariscope on a trestle stand, probably made shortly before World War I. The inscriptions read: "Franz Schmidt & Haensch. Berlin, S." and "No. 6883" and "D.R. Pat. No 82523." The referenced German patent, dated 1905, describes the polarizer which enables the observer to equalize the darkness (rather than the color) of the various parts of the image. A dust-proof housing encloses the quartz wedge compensator (which is moved by the vertical rod with milled head) and the linear scale (which reads from -25 to +100 degrees Ventzke). The (missing) observation tube is 400 mm long. This was used at the Virginia Polytechnic Institute.
label: Description
content: Ref: Franz Schmidt & Haensch, “Halbschatten-Polarisationsapparat,” German patent 82523 (1895).
label: Description
content: Arthur H. Thomas Co., <i>Laboratory Apparatus</i> (Philadelphia, 1906), p. 320.
label: Description
content: Arthur H. Thomas Co., <i>Laboratory Apparatus and Reagents</i> (Philadelphia, 1914), p. 430.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin, Berlin
topic: label: Subject
content: Optics
label: Subject
content: Chemistry
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Saccharimeters
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Virginia Polytechnic Institute
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.330534
label: catalog number
content: 330534
label: accession number
content: 293490
objectType: label: Object Name
content: saccharimeter
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 31 1/4 in x 9 in x 16 1/8 in; 79.375 cm x 22.86 cm x 40.9575 cm
label: Measurements
content: overall: 16 in x 9 in x 29 3/8 in; 40.64 cm x 22.86 cm x 74.6125 cm