File:PSM V29 D198 Gravity clock escapement mechanism aided by weight.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:01, 15 September 2010 | 2,050 × 2,446 (209 KB) | Ineuw | {{Information |Description = Gravity clock escapement mechanism aided by weight |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_29.djvu/198 |Date = 1886 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[ |
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