ARIZONA DEPARTMENT OF WEIGHTS
AND MEASURES
Ensuring Equity in the Arizona Marketplace
Large and Small Scales

LARGE AND SMALL SCALES
 
Small, seemingly insignificant errors can add up. For example, assume a scale used for weighing cheese is incorrect by 0.01 pound. Only 100 uses of the scales per day for 300 days, at a unit price of $7.99 a pound, would result in an error of $2,397 per year. The only way you could know the scale was in error was if you tested it.
That is where our department comes in. If you have a scale, used for commercial purposes, it's required to have a ADWM device license and have a Certificate of Conformance issued by the National Type Evaluation Program (NTEP).
 
 
 
Learn more about our testing procedures. Check out the NIST Handbook 112. It's what our Compliance Officers follow when inspecting your scale(s).