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| Title | Nasmyth's patent: 5 cwt | 
|---|---|
| Creator | Nasmyth Gaskell and Company | 
| Date of Creation | c1845 | 
| Description | 5 cwt steam hammer, front elevation with fine sketch detail section. Drawring roll 52 no 66. Scale 1 inch: 5 feet. Signed 'C Howson'. | 
| Archive Reference | NAS/1/17/2/9 | 
| Media | Ink and watercolour on paper | 
| Dimensions | 515x395 mm |