Like all the tympans with this instrument, this one
      has a faulty stereographic projection. By inspection, they
      are all for the same latitude, regardless of what the
      engraved latitude might indicate.. 
       
       
      
        Circles
        
          
            | Type | Labelled | Style | Notes | 
          
            | Equator |  | Plain line. |  | 
          
            | Tropic of Cancer |  | Plain line. |  | 
          
            | Tropic of Capricorn |  | Plain line. |  | 
        
       
      
        Lines
        
          
            | Type | Labelled | Description | 
          
            | Equal hours from sunset | Numbered (Numbers in Numbers, engraved script) | (Abdjad), Plain line style. | 
          
            | Equal hours from sunrise | Numbered (Numbers in Numbers, engraved script) | (Abdjad), Plain line style. | 
          
            | Meridian line |  |  | 
          
            | Horizon rectus |  |  | 
        
       
      
      
        Inscriptions
        
          
            | Transcription | Translation | Type | 
          
            | لعرض يح | For latitude 38° | Latitude | 
          
            | ساعاته يد | Hours 14h | Hours of daylight | 
          
            | المشرق | East | Direction | 
          
            | المغرب | West | Direction |