Hart Combination Protractor, Rule, and Square
date: label: date made
content: ca 1925
name: label: designer
content: Hart, Walter Wilson
notes: label: Description
content: This paper semicircular protractor is divided by degrees and marked by tens from 10 to 170 degrees in both directions. The letter A is printed in the bottom left corner of the protractor, and B is printed in the bottom right corner of the protractor. Centered under the origin point of the protractor is printed the inventor's mark: Combination Protractor, Rule, and Square (/) W. W. Hart, University of Wisconsin.
label: Description
content: A ruler along the top edge is divided to 1/8-inch and marked by ones from 0 to 5. A ruler along the bottom edge is divided to millimeterS and marked by ones from 0 to 12. The typeface of the inventor's mark is similar to that shown in Hart's textbooks published in the 1920s, such as Walter Wilson Hart, <I>Junior High School Mathematics</I>, vol. 1 (Boston: D. C. Heath & Co., 1921), vii, 131. See also MA.304722.06.
label: Location
content: Currently not on view
place: label: place made
content: United States: Wisconsin, Madison
topic: label: Subject
content: Mathematics
label: Subject
content: Protractor
label: Subject
content: Education, High School
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Protractors
creditLine: label: Credit Line
content: Gift of Brown University Department of Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.304722.07
label: accession number
content: 304722
label: catalog number
content: 304722.07
objectType: label: Object Name
content: protractor
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: .1 cm x 13.5 cm x 8.2 cm; 1/32 in x 5 5/16 in x 3 7/32 in