Basically a forklift, but buying and keeping a forklift just
to move three pieces of equipment back and forth 100 ft would be
ridiculous. And cost 5X the cost of the equipment itself :-) Are
there forklift-like devices, just the front end of the forklift but
wheeled manually, which are still quite small/portable and affordable?
If so, what am I looking for; what would it be called?

A pallet jack. Have a look at a pallet jack and design your machines so they can
use one.

If you are on campus you ought to be able to talk someone into the use of a
forklift anyway.

GWE