As a public health precaution due to COVID-19, all Smithsonian museums and the National Zoo are temporarily closed. We are not announcing a reopening date at this time and will provide updates on our website and social media.

Pamphlet, Einige Gutachten uber den freirollenden Koordinatographen

Pamphlet, Einige Gutachten uber den freirollenden Koordinatographen

Usage conditions apply
This illustrated pamphlet, written in German, publishes testimonials to the value of the coordinatograph, an instrument for plotting graphical coordinates (e.g. x- and y-coordinates) mechanically. Coradi first sold a form of the instrument in 1887. The pamphlet, published in 1913, prints letters from nine users in locations ranging from Russia to Switzerland to Egypt to New York. For further documentation on the coordinatograph, see 1977.0112.03 and 1977.0112.05.
The documentation was received with a Coradi rolling sphere planimeter with number 1977.0112.01.
Currently not on view
Object Name
date made
Coradi, Gottlieb
place made
Switzerland: Zürich, Zurich
Physical Description
paper (overall material)
overall: 17.2 cm x 24.3 cm; 6 25/32 in x 9 9/16 in
ID Number
accession number
catalog number
Credit Line
Gift of Koppers Company, Inc.
See more items in
Medicine and Science: Mathematics
Science & Mathematics
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.