Sign-board composed by some prisms lined-up among them which, turning on themselves, can compose three different pictures, so it's possible to create an effect of dissolvence between an image and the other one.

If we are talking about external advertising, Tri-vision is one of the most powerful advertising systems, as a matter of fact, thanks to its motion, it catch at once the attention, increasing people interest and curiosity and developing a greater effect of recollection in their minds.

It is available in two versions: Tri-vision basic and Tri-vision with interchanging lamellas.