BTW:
Here is another example of a close-up model having different details and shapes than the actual hero-model:
Close-up:
Hero-model:
It is even more confusing than that ... my understanding from Knoll and the fx dp (Sweeny? Rosenberg? don't recall) is that they only had the big model, that the only scaled up stuff they had were a couple of those cigar hull sensor dish thingies that get jettisoned and blow up.
For the shots you post, they shot the 10 ft model from something like a 1/4 inch away, and then for at least one of them, they added cg geometry matchmoved onto or over the miniature to give more scale. Maybe they didn't figure people would be comparing shots a decade later (silly them!)