Slated Globe
notes: label: Description
content: Erasable surfaces like slates and blackboards have been used in the United States since the late 18th century and became popular in the first half of the 19th century. A few teachers also acquired globes painted with “liquid slating” that could be marked with a slate pencil or chalk. These were used in teaching geography, astronomy, navigation, and spherical trigonometry. Commercial slated globes sold from the 1850s onward. This example, which comes with its own stand, is undated and unmarked. A small hour circle is near the North Pole. The meridian circle of the stand is graduated to degrees on both sides.
label: Description
content: The object was received at the museum from the National Bureau of Standards in the 1960s and transferred to the collections some years later.
label: Description
content: References:
label: Description
content: Accession file.
label: Description
content: P. A. Kidwell, A. Ackerberg-Hastings, and D. L. Roberts, <I>Tools of American Mathematics Teaching 1800-2000</I>, Baltimore: Johns Hopkins University Press, 2008, esp. pp. 29-30.
label: Description
content: D. J. Warner, “Geography of Heaven and Earth, Part 4,” <I>Rittenhouse</I>, 2, 1988, esp. 110-112, 120, 127-129.
label: Location
content: Currently not on view
place: label: associated place
content: United States: District of Columbia, Washington
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Trigonometry
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content: Science & Mathematics
label: See more items in
content: Spherical Trigonometry
creditLine: label: Credit Line
content: Transfer from U.S. Department of Commerce, National Bureau of Standards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1989.0188.01
label: catalog number
content: 1989.0188.01
label: accession number
content: 1989.0188
objectType: label: Object Name
content: slated globe
physicalDescription: label: Physical Description
content: metal, iron (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 39.7 cm x 27 cm x 21 cm; 15 5/8 in x 10 5/8 in x 8 9/32 in
label: Measurements
content: overall: 15 3/4 in x 10 1/2 in; 40.005 cm x 26.67 cm