Smithsonian museums continue to be closed to support the effort to contain the spread of COVID-19. Read a message from our director, and check our website and social media for updates.

Intertech Bow Compass Sold by Hearlihy & Co.

Intertech Bow Compass Sold by Hearlihy & Co.

<< >>
Usage conditions apply
Downloads
Description
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.
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.
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.
Location
Currently not on view
Object Name
compass
compass, drawing
date made
1987
maker
Intertech Drawing Instruments
place made
Germany: Mecklenburg-Vorpommern, Brunn
Associated Place
United States: Ohio, Springfield
Physical Description
zinc (overall material)
metal (overall material)
plastic (overall material)
Measurements
overall: 1.9 cm x 22 cm x 8 cm; 3/4 in x 8 21/32 in x 3 5/32 in
ID Number
1987.0589.01
accession number
1987.0589
catalog number
1987.0589.01
Credit Line
Gift of Daniel A. Hearlihy
subject
Mathematics
Drawing Instruments
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Dividers and Compasses
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Note: Comment submission on our collection pages is temporarily unavailable. Please check back soon!

If you have a question or require a personal response, please visit our FAQ or contact page.