Intertech Bow Compass Sold by Hearlihy & Co.
date: label: date made
content: 1987
name: label: maker
content: Intertech Drawing Instruments
notes: label: Description
content: This blue zinc alloy instrument has a black plastic handle. Black plastic adjusting bolts set the width of the instrument and the length of the needle and pencil points. The front of the handle is marked with the letter H. The bolt on the silver metal bow screw is marked: MADE IN W. GERMANY – PATENT. A fitted clear and black plastic box has a black and white plastic tube with two replacement pencil leads. The top of the box is marked in gold: H (/) Hearlihy & Co (/) 504.
label: Description
content: Intertech Drawing Instruments (Zeichengeräte) of Brunn, West Germany, made this compass in 1987, according to the donor. The head of the firm, Günther Partes, received U.S. patents in 1979 for a compass with a toothed mechanism for making adjustments and in 1982 for the leg design of this compass. The second concept received West German patent number 2,922,999 in 1979. Hearlihy & Co., a Springfield, Ohio, supplier of drafting instruments and developer of technology education curriculum modules, distributed this compass as model number 504. In 2012, Hearlihy offered a similar compass, possibly made by Intertech, for $7.10. Compare to 1987.0589.02.
label: Description
content: References: Günther Partes, "Compass with Fine Adjustment" (U.S. Patent 4,163,322 issued August 7, 1979), and "Holder for Lead Insert and Needle for a Compass" (U.S. Patent 4,327,491 issued May 4, 1982); Hearlihy & Co. online catalog, http://www.hearlihy.com; accession file.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Mecklenburg-Vorpommern, Brunn
label: Associated Place
content: United States: Ohio, Springfield
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
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 Daniel A. Hearlihy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1987.0589.01
label: accession number
content: 1987.0589
label: catalog number
content: 1987.0589.01
objectType: label: Object Name
content: bow compass
label: Object Name
content: bow compass
physicalDescription: label: Physical Description
content: zinc (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 1.9 cm x 22 cm x 8 cm; 3/4 in x 8 21/32 in x 3 5/32 in