I bought one of these a while ago and it seems to work fine. Except at 3AM when tripping balls and it somehow convinced me 150 mg of ket was only 50 mg. But under normal conditions it’s pretty straightforward. And you can recalibrate it easily with the included weight.
EDIT
Brifit Digital Milligram Scale, 50g Portable Mini Scale, 0.001g Precise Graduation, Professional Pocket Scale with 50g Calibration Weights Tweezers (Batteries Included)
https://www.amazon.com/dp/B07ZKG6TBZ/
I forgot to add, I never tare any scales, kitchen, digis or MG.
It can make for inaccuracy as the weight will often move by a point or two.
I put my container on, with my MG scales it reads 601 mg’s.
I add powder til it says 851, lift, it will always be zero, replace, repeat, to be sure.
If I’m weighing weed on 0.1 scales, if I tare the 5.85 gram pot to zero, add bit by bit, it’s almost guaranteed to say minus 5.87 when I lift.
So if I want 7 grams to make edibles (or to do whatever with

), I don’t tare the weighing pot, I add 7 grams until it’s saying 12.85 grams, zero lifted always, it never moves up or down that way, only after being tared.
I wish scale makers would address this. I see it in almost every weighing scale I’ve ever used.
An extra gram or less of rice is one thing, but I value accuracy in all things, especially drugs.
So that’s my tip guys, don’t tare your scales, just calculate the total weight, lift to ensure it’s still at zero, replace and treble check for best accuracy.