That projector is awesome, I bet it eats CRTs for lunch ! Modern units are rated 10k hours so with 40's technology I wonder what that one gets, 5k ? Whats the HV on it ? You can probably check for broken bones with its xray output heh. I didn't know anybody had a working one, I saw some original photos of one on a TV site a few days ago.

Now you just need to get 2 more, some color filters and a demodulator for the worlds largest color projector