Michigan Compiled Laws, Chapter 290. Weights, Measures and Standards § 290.629

Sec. 29. (1) Any person who assaults or inflicts a bodily injury upon, the director, an authorized representative of the director, the deputy director, any inspector, or a sealer or deputy sealer in the performance of his or her official duties under this act is guilty of a misdemeanor punishable by a fine of not more than $10,000.00 or imprisonment for not more than 2 years, or both.

(2) Any person who hinders or obstructs in any way the director, an authorized representative of the director, the deputy director, any inspector, or a sealer or deputy sealer in the performance of his or her official duties under this act is guilty of a misdemeanor punishable by a fine of not more than $5,000.00 or imprisonment for not more than 1 year, or both.