In general this is basically a complete scale. I bought this around four years ago at a very affordable price and it hasn't let me down since. I haven't changed the battery in all this time. The only downside is the small plate (where you place the material to be weighed) which makes it hard to weigh Cannabis, for example. Also, weighing things that are under 50 mg is not a good idea, because there is a margin of error of about 25 mg, so determining doses for things like 2C-B may be pretty risky.
Dear Drugs-Forum readers: We are a small non-profit that runs one of the most read drug information & addiction help websites in the world. We serve over 4 million readers per month, and have costs like all popular websites: servers, hosting, licenses and software. To protect our independence we do not run ads. We take no government funds. We run on donations which average $25. If everyone reading this would donate $5 then this fund raiser would be done in an hour. If Drugs-Forum is useful to you, take one minute to keep it online another year by donating whatever you can today. Donations are currently not sufficient to pay our bills and keep the site up. Your help is most welcome. Thank you.
On Balance CJ-20 Milligram Scale
On Balance CJ-20 Jewel Milligram Scale 20g x 0.001g