SDCL § 37-22-1: Scales under supervision of department and subject to inspection.

All track scales and all other scales in this state used by common carriers or by shippers for the purpose of weighing cars or freight offered for shipment in car lots and all scales and weighing devices in public warehouses and grain elevators and all stock scales at stockyards and all private, farm, and municipal scales used in weighing hay, grain, wood, coal, and like subjects of commerce are under the supervision and control of the department and are subject to inspection by the department. Farm scales may only be inspected at the request of the owner.