Safe-T 45700 Bullseye Compass
date: label: date made
content: 2000
name: label: maker
content: Safe-T Products, Inc.
notes: label: Description
content: Like 2000.0160.06, this red and white plastic instrument combines a ruler, a protractor, and a compass. Unlike 2000.0160.06, this object is smaller, white instead of clear, and uses a slide instead of rows of holes for setting the radius of a circle. The semicircular (protractor) end is wider than the rectangular part of the instrument. It is marked in 15-degree increments in both directions, from 15 to 165 degrees, and divided to units of five degrees.
label: Description
content: Inside the arc is a small rotating disc. The rectangular ruler has a groove down its center that carries a sliding red plastic piece with two holes in it. This piece can be set anywhere along the scales on the ruler, giving the distance from the center of the small disc. Placing a writing implement in one of the holes and rotating the ruler while keeping the disc fixed gives a circle of the radius set. One of the long edges has a ruler 12 centimeters long, divided to millimeters. The other edge has a five-inch ruler, divided to 16ths of an inch.
label: Description
content: The back of the instrument is marked: U.S.Pat. # 5,615,485 (/) Other Pats. Pend. The back of the slide is marked: MADE (/) IN CHINA. The Bullseye Compass was introduced in 2000 and retailed for $1.99 in 2012.
label: Description
content: References: Learning Resources online catalog (accessed October 22, 2012); Ho Chan, "Adjustable Compass with Ruler and Protractor" (U.S. Design Patent 411,959 issued July 13, 1999); J. Bruce Stoneberg, "Drawing Tool" (U.S. Patent 6,606,796 issued August 19, 2003); accession file.
label: Location
content: Currently not on view
place: label: place made
content: China
label: Associated Place
content: United States: Illinois, Bensenville
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
label: Subject
content: Protractor
label: Subject
content: Rule, Measuring
label: Subject
content: Education
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
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content: Dividers and Compasses
creditLine: label: Credit Line
content: Gift of Extra Measures, Inc.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2000.0160.08
label: accession number
content: 2000.0160
label: catalog number
content: 2000.0160.08
objectType: label: Object Name
content: compass
label: Object Name
content: compass, drawing
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: .4 cm x 15 cm x 3.2 cm; 5/32 in x 5 29/32 in x 1 1/4 in