Thanks for the information. This is not the only product that is out there, but none of them are very portable. You can certainly take it apart, but there are several long pieces and many short pieces that can be lost or cumbersome to carry. It's not something you would pop in your equipment back and take on a beach dive with you.
Again, this is only for a class, so we don't have to actually build it, though it would be fun to design something truly compact.