The Rainbow was weighed...
as the canister with tool caddy (with the tools actually installed on it) and wheel base. I imagine that with those two items removed, you would save a few pounds. The power nozzle was weighed just as the fully assembled nozzle, no hose connected to it.
The Lux and TurboPower nozzles were weighed similarly, fully assembled (wands) but no hose connected.
Bill