File:PSM V39 D648 Various forms of hydrometers.jpg

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Description Various forms of hydrometers
Date
Source Popular Science Monthly Volume 39
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to greyscale, cropped whitespace. The original can be viewed here: Popular Science Monthly Volume 39.djvu: . Modifications made by Ineuw.

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Date/TimeThumbnailDimensionsUserComment
current04:33, 13 October 2015Thumbnail for version as of 04:33, 13 October 20151,688 × 2,565 (913 KB)IneuwCleaned image and improved contrast
20:45, 27 November 2010Thumbnail for version as of 20:45, 27 November 20101,786 × 2,680 (1.51 MB)Ineuw{{Information |Description = Various forms of hydrometers |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_39.djvu/648 |Date = 1891 |Author = Unknown |Permission = {{PD-old}} |other_version
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