Printing plate
        
        A plate for printing 9.4" Admiralty steering cards -consists of a square steel printing plate engraved with a 9.4" (23.8cm), graduated to 1/4 points and quadrantally in degrees. Has a "Royal Crown" below N point decoration.
              
      
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Object Details
| ID: | ACO0979 | 
|---|---|
| Type: | Printing plate | 
| Display location: | Not on display | 
| Creator: | Unknown | 
| Date made: | 1840 | 
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory | 
| Measurements: | Overall: 3 mm x 303 mm x 304 mm | 
