The TM-31 Recreational Time Travel Device

The TM-31 Recreational Time Travel Device is Charles's time machine. He thinks calling it "recreational" is a misnomer, as it is a working vehicle he uses to reach recreational time travelers who become stranded. It is about as big as a typical shower stall, and he can barely lie down in it end-to-end. On board, he has the computer, TAMMY, and his dog, Ed. Aside from that and a few tools, the machine carries little else, but it is virtually Charles's world.

Minor Universe 31

Minor Universe 31 is the alternate universe in which Charles works. It was intended to be a recreational and residential construct, made of science fiction "substrate" wrapped around a smaller core of reality. Difficulties were encountered during construction and its "conceptual framework" was left incomplete. It later was bought by another company, which created a huge theme park element...