Hi, I've been given a Wallner darkroom timer, probably 40 yrs old, with no instruction booklet. It has a sensor that presumably goes on the enlarger easel, and includes knobs for adjusting C and M (cyan and magenta?). I have no idea how to use this, but I'd like to have an enlarger timer. I only do B&W.
Does anyone know how I use this?
Thanks
Bookmarks