Skip to main content Skip to main navigation
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
International media Interoperability Framework
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.
View manifest View in Mirador Viewer
  • Initial Design, Georgia Iron Works Slide Rule
  • D. W. Hagler and Demonstration Version of Georgia Iron Works Slide Rule
  • Danforth W. Hagler, Inventor of Georgia Iron Works Slide Rule