Yes, it comes with a mount which is a plastic pipe with a pivot at the base. I'm sure you could mount the station itself on the same size pipe. The hardest thing would be getting it level. I'm not sure what diameter the pipe is but I would guess the outside diameter is around 1 in. The pipe in the picture is part of the base, and the unit sits over the end of the pipe. Hope this answers your question. 

Yes 

Has a 1/4 threaded connection for use with a tripod 

Yes, it has a level bubble. If you look closely in the photographs, there is a round shape near where the camera locks on. That is where the level bubble resides, in the circular protrusion with light green inside. It's hard to see in the photos due to the angles, but it's definitely there! I have this tripod and use the bubble all the time.  

IP65 waterproof rating, can prevent rain but not soak in water