Busted. My scale absolutely has a units mode that is very fun and completely caters to my precision fetish.

Or at least I thought it did until I considered bean-weight variability...

It’s infuriating when you change brands. Built up a feel for how much a bean weighs and how many are needed to go from 17.9 to 18.0g? Yeah, that other bean requires five beans, and not just one.

Or removing the right sized bean to go from 18.1g to 18g

of course factoring in the age and roast too

there are even more niche products, literally called bean counters which dose whole beans to a certain weight. believe it or not they are well over $100. the deep end of coffee is both insane and expensive