Prism from Photographic Zenith Tube
        
        Glass prism, metal mounting on reverse. From Photographic Zenith Sector.  This is a dove prism used for rotating an image.
              
      
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Object Details
| ID: | ZBA0688 | 
|---|---|
| Collection: | Astronomical and navigational instruments | 
| Type: | component, telescope | 
| Display location: | Not on display | 
| Creator: | Unknown | 
| Date made: | ca.1954 | 
| People: | Royal Greenwich Observatory | 
| Credit: | Components. National Maritime Museum, Greenwich, London, RGO Collection | 
| Measurements: | Overall: 12 mm x 54 mm x 13 mm | 
