N.J. Stat. § 51:1-88
No person shall refuse to exhibit any weights, measures, packages, containers, weight certificates, delivery tickets, invoices or any other documents setting forth the quantity or value of any commodity or service to any weights and measures officer for the purpose of being inspected and examined, nor shall any person refuse to admit such officer to his place of business, during his usual hours of business, nor shall any person who may be buying, selling or delivering goods, liquids, commodities, or services from any vehicle in transit refuse to permit such officer to examine any weights, measures, packages, containers, weight certificates, delivery tickets, invoices or any other documents setting forth quantity or value of any commodity or service which may be in or about the vehicle, under a civil penalty of not less than $100.00 for every such offense.
N.J.S. § 51:1-88