For extracts I use my jewelry scale since it can go down to milligrams but in the past I used one (that I can't find currently on Amazon) that goes down to .01g. .001g here that I recently picked up and am loving so far. .01g here that looks to have solid reviews.

I use this one for my DIY Juice. I made 9 120ml bottles today with it. I measure each flavor by weight using the tare function, and when all that's left to add is VG, I no longer need the scale for that so 100g max is plenty. I've had it about two years.

It's half the price of the one that OP linked, and in my testing using weights, its crazy accurate. Just make sure you don't use the included batteries. Lots of reports of them leaking and ruining the scale. I put in some name brand batteries and the scale has been fine.

Edit: all that said, OP did link a fantastic scale that is highly recommended on /r/diy_eliquid