Throne
The throne is of the moorish arch type
      
      . The throne is attached with a integrated base. The front is
      undecorated. The 
back bears
      the maker's inscription..
      
      Markings:
      
        
          | Content | Translation | Notes | Type | 
        
          | الحمد لله وحده صنعه محمد بن أحمد البطوطي سنة
          ١١٤٦ | Praise be to God alone. Made by Muḥammad ibn Aḥmad
          al-Baṭṭūṭī in the year 1146 (AH). |  | Maker's signature | 
      
      
      
      
      Ring
The ring is of the simple, round cross-section
      type (i.e. simple plain ring made from a round rod or piece
      of metal).
      
      
      Shackle
Shackle of the rotating pin type (i.e. pin
      with a 'ball-joint' on the end). The 
pin
      attaches to a decorative square bracket.. 
      Mater
The mater and limb are of two pieces, soldered
      and riveted construction. The notch for holding the tympans
      in place is located at the throne.. Scales on the limb:
      
        
          
          | Range & Units | Numbered | Geometry | Location | 
        
          | Degree | 0 - 360 Degrees of arc | Every 5 degrees | Circular, concentric | None | 
      
      
      Womb
      Contains a perpetual calendar and solar-cycle..
      The womb contains 2 scales of the following types: