So I have a quick tip, and hope it's helpful to some of you who eyeball your dose.
I didn't want to put up a link, but you can easily find 5mg measuring scoops on ebay used for measuring powder. What I do is bust out the scoop, and my scale, find out what something like 5 scoops weighs out too, (for me it's usually 25mg) .
So this way once I do a few measurements on the scale, I know something like 5 scoops would be 25mg, maybe 6 would be 30mg and so on.
I found this method to be way better than eyeballing, and it saves you the hassle of bringing a scale and measuring it out everytime.
The scoops are super cheap, like 2 bucks or so for 5 of them.
If you need it EXACT then of course, you always need to weigh it.