MIOSHA does have a program where you can borrow the equipment for free. Keep in mind there are two main types of meters. The noise level meter that takes a reading at a moment in time. Like most phone apps. This is only good if your noise level is constant throughout the shift. Our noise is not constant. We had to use the other type, a noise dosimeter. It stores the info and produces an 8 hr avg level. Which the State wants to see anyway. I hoped you did some research. Noise levels is an important issue for MIOSHA. It is one of the few health and safety areas that require written procedures.