The USDA certifies them in my state. The inspector checks the scale for accuracy. If your scale is accurate it will probably pass.

Thank you, that gave me somewhere to start.

Called the Feds. They refered me to the State of Georgia. Called them, got transfered around alot. Finally, a very nice man answered the phone and explained the process. I call, and set up an appointment with the inspector. He can come out and certify the scale. There is no charge for this service.

all scales are not created equal. where i'm at we must use scales designated legal for trade. then each year i have my legal for trade scale certified by the state weights and measure/ag dept. if they were to come to my place it would cost $60 over the $12 i pay by taking it in. you might do a search on the subject of scales and per item pricing if your interested.