It's wildly precise - the coffee appears to be measured in "impulses", where a single impulse is somewhere < 5mL (if I were to guess - between 1-2). 250 impulse

It's wildly precise - the coffee appears to be measured in "impulses", where a single impulse is somewhere < 5mL (if I were to guess - between 1-2). 250 impulses is juuuust enough to fill my coffee mug, but I think it varies a bit between modes. The milk is measured in 1/10s of a second of flow, most likely because the volume depends on the foam setting. I haven't gone as far as pushing the machine out of bounds intentionally, or even sending a parameter that's considered invalid yet.