File:The Thacher Calculator (33148590206).jpg
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Size of this preview: 800 × 532 pixels. Other resolutions: 320 × 213 pixels | 640 × 426 pixels | 1,024 × 681 pixels | 1,280 × 852 pixels | 2,560 × 1,703 pixels | 3,365 × 2,239 pixels.
Original file (3,365 × 2,239 pixels, file size: 4.19 MB, MIME type: image/jpeg)
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| Description |
The Thacher calculating instrument was patented in 1881. It was cylindrical and could slide back and forth, giving it the power of several individual slide rules. It could do multiplication and division, and calculate interest, roots and powers of numbers to about five significant figures. It was also accurate to within about .01%, incredible accuracy for that time. This photo is free of all copyright restrictions and available for use and redistribution without permission. Credit to the U.S. Food and Drug Administration is appreciated but not required. For more privacy and use information visit: www.flickr.com/people/fdaphotos/ |
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| Source | The Thacher Calculator |
| Author | The U.S. Food and Drug Administration |
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Unless otherwise noted, the contents of the Food and Drug Administration website (www.fda.gov) —both text and graphics— are public domain in the United States. [1] (August 18, 2005, last updated July 14, 2015)
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This image was originally posted to Flickr by The U.S. Food and Drug Administration at https://flickr.com/photos/39736050@N02/33148590206. It was reviewed on 28 January 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the United States Government Work. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:20, 28 January 2018 | | 3,365 × 2,239 (4.19 MB) | Artix Kreiger 2 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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