The old kind that’s just a reader (well, frankly it’s just a magnifying glass and a light.) Doesn’t print, certainly doesn’t scan. Essentially they’re big cabinets where you put the film in on top where there’s a spool and a lens and a takeup reel and you scroll through it with a handle on the side; a light projects the film onto the inside back of the case. They’re really good for browsing through a lot of film. Work best in darker rooms. Very simple machines.
What specifically do you call those?