Original file (314 × 1,090 pixels, file size: 51 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:10, 7 December 2011 | 314 × 1,090 (51 KB) | Karel K. | + | |
07:32, 3 June 2008 | 486 × 992 (121 KB) | Chetvorno | {{Information |Description={{en|1=Photo of astronomical regulator clock made by Clemens Riefler which was the primary US time standard from 1904 to 1929, in the NIST Museum in Gaithersburg, MD.}} |Source=Retrieved from [http://tf.nist.gov/timefreq/general |
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Original file (314 × 1,090 pixels, file size: 51 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 16:10, 7 December 2011 | 314 × 1,090 (51 KB) | Karel K. | + | |
07:32, 3 June 2008 | 486 × 992 (121 KB) | Chetvorno | {{Information |Description={{en|1=Photo of astronomical regulator clock made by Clemens Riefler which was the primary US time standard from 1904 to 1929, in the NIST Museum in Gaithersburg, MD.}} |Source=Retrieved from [http://tf.nist.gov/timefreq/general |
The following other wikis use this file: