When you want accuracy in weight measurement, this scale from American Weigh Scales is the best for the least cost.  Accurately measuring down to .01 gr. (1/100th of one gram).  Since many recipes demand weight over volume, this scale will allow you to use the correct amount of any particulant inoculant.

Features:

70g Capacity
0.01g Resolution
Backlit LCD
Flip-open lid protects the delicate weighing surface
Great for precision weighing on the go
Reads in g, oz, ct, and gn
Stainless steel weighing platform