Relay interrupter with a “C. KRILLE / LEIPZIG” inscription. Carl Krille was a German instrument maker who showed some of his apparatus at the Columbian Exposition held in Chicago in 1893.
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.