River Yealm triangulation
        
        Scale: 1:31,180. Triangulation survey of the River Yealm
              
      
    Object Details
| ID: | STK223:2/134 | 
|---|---|
| Collection: | Charts and maps | 
| Type: | Chart | 
| Display location: | Not on display | 
| Creator: | Stokes, John Lort | 
| Date made: | 1859-1862 | 
| Credit: | National Maritime Museum, Greenwich, London. Caird Fund. | 
| Measurements: | Sheet: 37.5 cm x 32 cm |