Bubble machine

This is simple bubble machine with parts from Tedi bubble machine (Tedi store is located in most of European countries). It can be used for kids to play with it or for RC or free flight model makers to indicate thermals and wind directions. In case of making more machines, it can locate thermals more precise. Just make sure you place them enough apart from each other.For build this model you will need Tedi bubble machine (5€ cost, it comes in two shapes, blue whale and green frog. They both fit)