Re: Contax T rangefinder VERTICAL adjustment: I was unable to locate the described screw head after removing the top plate and the port plug beneath the film advance lever so my vertical is still slightly off but here are some other, hopefully helpful, observations:
There are 3 screws securing the top. Work on a white cloth surface at first if possible to keep loosened screws from getting away.
Once the top is off and the adjusting port plug is removed, mounting the camera on a tripod frees a hand - otherwise you’ll need three! Focus on some distant object having both distinct horizontal AND vertical lines. Adjust.
Buttoning up the top is best done by turning the top shell upside and lowering the body onto it. (also upside down disassembly helps you keep parts from spilling out). That will allow you to place and retain the shutter button, delay switch and +1.5 exposure button - all having “shoulders” to block their rapid exit by gravitation if they are placed but the top is then turned right side up to mount to the body..
Keep an eye on the tiny post mounted spring just front and favoring left side of the film shot counter lcd. If it’s loose, a tiny drop of CA glue (tiny drop!) will keep it in place. I’m uncertain it’s function but it appears to form a ground, perhaps for the counter.
Careful when you replace the plug behind the film advance lever! It can easily slip through the opening and then you’re stuck reopening the top to retrieve the little plug feller!
