225 ILCS 470/30
Each type of weight and measure or weighing and measuring device manufactured, offered, or exposed for sale or sold or given away for the use in trade or commerce, or used in trade and commerce in this State, shall conform with the requirements and specifications in the National Institute of Standards and Technology Handbook 44, 105-1, 105-2, 105-3, 105-4, or 105-8 and any of their revisions or supplements. Such weights and measures or weighing and measuring devices used for commercial or law enforcement purposes must have a Certificate of Conformance, unless such devices were certified by the Department or the city sealer on or before July 1, 2012. This Section applies to all such devices, including repaired devices and devices removed from service and installed at a different location in this State . Pending the issuance of a Certificate of Conformance, the Department may permit such weight and measure or weighing and measuring device to be used, provided it meets the specifications and tolerances for that particular weight and measure or weighing and measuring device as set forth in the National Institute of Standards and Technology Handbook 44, 105-1, 105-2, 105-3, 105-4, or 105-8.
225 ILCS 470/30