I got this, and it turned out okay. It was the only one that let you disable the power-off "feature".

I already have a good .01 scale, but it's nowhere near accurate enough. This new one seems have an accuracy of around +/- .003, which is at least 10x greater accuracy than my .01 scale.

I also add filler to the mushroom powder (another mushroom powder) to reduce the effect of errors on the dosage.