Section R. 408.41938 - Hand toolsRule 1938.
(1) A pipe, socket, end, or adjustable wrench or pliers having sprung or worn jaws that allow slippage shall not be used.(2) Impact tools such as, but not limited to, a drift pin, chisel, wedge, or hammer, shall be kept free of mushroomed heads.(3) A wooden handle of a hand tool that is split, cracked, or splintered shall not be used.(4) A measuring tape or device that is metal or contains conductive strands shall not be used when working on or near electrically energized parts.Mich. Admin. Code R. 408.41938