La photographie par soi-même / [Burroughs Wellcome & Cie.].
The pattern
This still sits in the public-domain pool. No pattern name yet.
Why it works
Empowering amateur photographers with self-contained chemical developer tablets. Clear darkroom instructions show that pre-measured chemical pellets eliminate messy weighing scales.
Steal this when
When marketing specialized chemicals to hobbyists by providing foolproof pre-measured tablet forms.