Description220 grit (scale).jpg English: Macro photo of a 220 grit sandpaper made of aluminum oxide Date 19 January 2016 Source Own work Author Woodsurfsc...
Description320 grit (scale).jpg English: Macro photo of a 220 grit sandpaper made of aluminum oxide Sandpaper disc Date 19 January 2016 Source Own work...
This file has an extracted image: Charles M. Palmer - The Editor and Publisher 1912-05-04 (cropped).jpg....
1872-75. (Horizontal and vertical scales 220 feet to 1 inch.) s.w. N.E A, A. Bottom, as excavated. B. Hard grit rock. C, C. Black shale. D. Soft broken...
Turner's Trench, Yarrow Reservoir, 1872-75. (Horizontal and vertical scales 220 feet to 1 inch.) w. E. A, A. Bottom, as exoavated. G. Gravel. B, B. Shale...
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