I had originally done the drawings using MicroSoft Visio. As I thought it might be helpful to others who are interested in lightweight modular systems, I converted them to JPG images and have also included a photo of the leg assembly.
This drawing is both sides of the two horizontal cross rails that bolt to the leg assemblies with 4 1/4-20 bolts.
This is what the leg system looks like when set up. It uses 4 1/4-20 bolts to fasten the rails to the legs. These same bolts are used to secure the 4 pieces together in a flat formation for transport and storage.