School and cinema projectionsts. Portable 35 m.m. film (movir projectors)

I'm curios:
1) Did any one around here worked as a projectionst. School, cinemas (movie theaters), 16, 35, 70 m.m. (IMAX or Non-IMAX);
2) Does any one ever owned an portable 35 m.m. film (movie) (motion picture) portable projector?

 

Just 16mm in high school classrooms

 

I ran 16mm projectors in college. Had 16mm films and projectors for awhile. Sold it all and went digital. A friend used to own a portable 35mm projector.

 

I was a member of the crew that showed 16 mm sound movies in high school. It was a lot of fun.