What is this object on an ultralight?
  
 
     
     
             
                 
 
 
         
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 This is a tool (probably) in on an ultralight airplane. Initially I guessed that it is a tilting meter (to level between right and left), but seems it is not as it just a vertical tube filled up with something like liquid.   So, what is that and how does it work?        
 
         
             
                 aircraft-design flight-instruments ultralight 
             
         
 
     
         
             
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         edited 19 mins ago 
     
     
         
     
     
         Notts90 
         
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         asked 6 hours ago 
     
     
         
     
     
         AirCraft Lover AirCraft Lover 
         
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