What is this for?

I went though several iterations and settled on Gralab digital timers. Gralab 300 was nice but accuracy at less than 10 minutes weren't great. Digital versions aren't 100% reliable but works well enough for my needs. I believe I paid $50 or something right here on APUG.

I also use several non-lit LCD digital kitchen timers for processing. Even with my dim safe-light, I can see well enough and beeps to be used as a process timer for dev, stop, fix, etc. for paper.