File:Arc valve tappet rock drill, section (Rankin Kennedy, Modern Engines, Vol VI).jpg
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![File:Arc valve tappet rock drill, section (Rankin Kennedy, Modern Engines, Vol VI).jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/6/68/Arc_valve_tappet_rock_drill%2C_section_%28Rankin_Kennedy%2C_Modern_Engines%2C_Vol_VI%29.jpg/799px-Arc_valve_tappet_rock_drill%2C_section_%28Rankin_Kennedy%2C_Modern_Engines%2C_Vol_VI%29.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:54, 10 May 2010 | ![]() | 870 × 294 (33 KB) | Andy Dingley | {{Scans from 'Rankin Kennedy, Modern Engines', 1912 |volume=VI |figure= |page=162-166 |title= |description= }} Category:Rock drills |
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