The more butter you add the righter it becomes.

My hand has an accuracy of about 0.1-0.2g accuracy. Well, with weed. I haven't measured how accurate it is with spices or salt or sugar because I never measure those.

Baking or "baking"?

Does it work only with butter?

I‘ve got this in a less accurate but more versatile way: I can do this +-50gr of almost anything