In one way or another, all of commerce is affected by the activities of weighmasters. Weighmasters are persons who are licensed by the Division of Measurement Standards to certify the weighed, measured, or counted quantity of any commodity. The certificates issued by weighmasters are recognized by courts of law as being a legal document. As such, there are criteria that must be followed by weighmasters when issuing weighmaster certificates. Training is provided and inspections are performed by county weights and measures officials to ensure the correctness of the certificates issued.