Before I begin, one quick confession: I never watched this show much when it first came out. It was in direct competition with the original Star Trek and as a kid, I only go so much time in front of the idiot box.
That being said, what we have here is one fascinating vehicle. Featured in the second episode of Lost in Space, it was part of a real attempt at science fiction story telling before the gradual descent into satire. It’s in 1/350th scale, which makes both it and the Jupiter included in the same scale as the series of large-scale Enterprise kits currently available. For that matter, you could have the Jupiter docked on an aircraft carrier deck.