Plate IX, figures 12 & 13 relating to Harrison's 4th marine timekeeper contained inside a folder.
              
      
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Object Details
| ID: | ZAA0643.9 | 
|---|---|
| Type: | |
| Display location: | Not on display | 
| Creator: | Unknown | 
| Date made: | Unknown | 
| Credit: | National Maritime Museum, Greenwich, London | 
| Measurements: | Overall: 1 mm x 220 mm x 172 mm | 
| Parts: | 10 prints relating to Harrison's 4th marine timekeeper (Prints) |