Safe-T Circle Perfect Compass
date: label: date made
content: 1997-2000
name: label: maker
content: Safe-T Products, Inc.
notes: label: Description
content: This instrument consists of two orange molded plastic discs held together by a metal screw and a plastic bolt, a blue pencil, and a blue plastic stylus with a metal point. The pencil and the stylus fit between the discs on opposite sides of the screw. The user adjusts the screw and stylus to the desired diameter for the circle, according to a scale from zero to ten inches on the front of the instrument or a scale from zero to 24 centimeters on the back of the instrument. The compass is somewhat flimsy to operate.
label: Description
content: The front of the disc is marked: CIRCLE™ (/) PERFECT (/) #45748. The back is also marked: pat. pend. The stylus is marked: CHINA. A blue and orange cardboard backing was held to the instrument by the screw. The back of the card has instructions and is marked: Pat. Pend. (/) Made in China (/) SAFE-T PRODUCTS™, Inc. (/) P.O. Box 692 (/) LaGrange, IL 60625 [<i>sic</i>]. As with other Safe-T items in the collections, this model number was used for distribution to retail stores. Extra Measures, the company associated with Safe-T Products, sold this compass through its own catalog as model number 45743 for $2.25 around 2000. For company information, see 2000.0160.04.
label: Description
content: References: Bruce Stoneberg, "Circle Compass" (U.S. Patent 5,630,278 issued May 20, 1997); 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: Education
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: 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: 2000.0160.07
label: accession number
content: 2000.0160
label: catalog number
content: 2000.0160.07
objectType: label: Object Name
content: compass
label: Object Name
content: compass, drawing
physicalDescription: label: Physical Description
content: lead (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: cardboard (overall material)
label: Measurements
content: overall: 2.5 cm x 7.5 cm x 20.2 cm; 31/32 in x 2 15/16 in x 7 15/16 in