Kaiser Determinator of Paper Gradation

I've been printing for years and always struggled with contrast grades, but this dial is so intuitive that I had my exposures dialed in within minutes of unboxing it. The markings are large enough to read even with safelight dimness, and it's saved me a whole box of test strips already.

This little dial finally took the guesswork out of picking contrast filters in the darkroom. It's saved me a whole sheet of paper per print just by dialing in the right grade on the first try. The markings are clear and easy to read even under the dim safelight.

I was skeptical about needing a calculator disk for paper grades, but after one session in the darkroom, the precise step-by-step markings saved me from wasting multiple test strips. The dial feels sturdy and the clear print makes it easy to read under red light.