I've had very good luck with the little digital I got from Midway. I does grams and grains. It also has a calibration weight in it but I think for smaller measurements I'd get a 'check set' of weights. The whole shebang would cost well under $100, more like $75.

Mine works VERY well but you have to keep an eye on it and when it has difficulty getting consistent readings or is slow about showing a reading, it needs the batteries changed. Check it often and you'll have no problem. I've had this one a several years now and if it breaks tomorrow, I'll just go buy another one.

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