Throne
The throne is of the simple type
      
      . The throne is attached with a integrated base. This broad,
      undecorated 
throne has
      nine lobes..
      
       
      
      
      
      Shackle
Shackle of the omega type (i.e. Ω-shaped
      shackle). . 
      Mater
The mater and limb are of one-piece
      construction. This instrument is unusual in that the limb is
      a thin plate of metal, cut to fit exactly on the mater ring
      and the throne.. Scales on the limb:
      
        
          
          | Range & Units | Numbered | Geometry | Location | 
        
          | Degree | 0 - 360 Degrees of arc | Every 5 degrees | Circular, concentric | None | 
      
      
      Womb
      
      The womb is inscribed:
      
        
          
          | Translation | Notes | Type | 
        
          | القزم و مدين و كابل و طلوس و جلاص العرض كح ك ساعاته
          يج ن | Qolzum and Madyan and Kabul and Tawiyus and ???, the
          latitude 28° 20'; hours 13h 50m |  | Latitude | 
        
          | المشرق | East |  | Direction | 
        
          | المغرب | West |  | Direction | 
      
      
      
      
        Almucantars
        
          
          
            | Divisions | Labelled | Style | 
          
            | Divided every 5° from 0° to 90° | Labelled every 5° with   (Abdjad,
            maghrib) numerals | Plain line. | 
        
       
      
        Azimuths
        
          
          
            | Divisions | Labelled | Style | 
          
            | Divided every 9° | Labelled every 9° with   (Abdjad,
            maghrib) numerals | Plain line. | 
        
       
      
        Circles
        
          
            | Type | Labelled | Style | Notes | 
          
            | Equator |  | Plain line. |  | 
          
            | Tropic of Capricorn |  | Plain line. |  | 
          
            | Tropic of Capricorn |  | Plain line. |  | 
        
       
      
        Lines
        
          
            | Type | Labelled | Description | 
          
            | Meridian line | خط الزوال (Midday line) (Arabic in Kufic
            script) |  | 
          
            | Horizon rectus |  |  | 
          
            | Unequal hours | Numbered (Numbers in Numbers, engraved script) | (Abdjad, maghrib), Plain line style. |