Baumann Cavaion Seitenstapler Teleskopierbare Langguttraverse, Sideloader telescopic spreader beam 

The only problem I have is that u can’t really see ur right side, and lifting something to high could make it topple due to high winds, causing someone to be hurt. I can see ur function behind this but I think u need to either improve the way it functions or add something, maybe like a monitor in the cab linked to a camera that can show u the right side. Also maybe some beacon lights on that side. I don’t know maybe I’m over thinking this.