Now that's what I call a perfect example of "some old rusty mechanical relic" -- that will still be working LONG after I'm gone.
I mean I'll readily admit my take was slightly hyperbolic and both mechanical and electronic can fail as someone rightly pointed out - however..
A Wisner Technical 4x5.
Two metal frames holding a leather bellows and a pair of rails to get the two square frames closer to or farther from each other. That's basically it.
No shutter, no lens, no focusing helicoid, no film pressure plate, no film advance mechanism. No gears, no dials.
Come on now. It would be weird it it weren't still 'working' when you're gone.
It's an extremely simple thing, very far removed from the aging, failing and complex mechanical 35mm cameras people are mentioning as a 'better' alternative to the Pentax 17.