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Description: | Thick card wheel with 24 hole patterns, breaking off around edges, rotated by handle or belt, mounted on cast iron frame. Brass mount wooden handle. Hole patterns numbered from centre: 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40, 43, 51; 5:4; 4:3; 3:2; 5:3; 7:4; 6:5; 4:5; 8:6; unreadable; 2 more unreadable for wheel has disintegrated at edge. | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1860-1862 | Source: | University of Aberdeen | Creator: | W. Ladd, Beak Street, Regent Street, W. round centre of wheel | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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