Tenn. Code Ann. § 47-26-809: Display of license - Duties of weigher

(a) The certified public weigher's license shall be posted near the scale beam or indicator in full view at all times.

(b) A certified public weigher shall be the only person allowed to operate the scale or weight recording equipment.

(c) In case of batch weights, the certified weigher shall observe all measurements and count all batches to determine the total gross weight including vehicle.