Get a more exact productivity picture with an hour meter from Grainger. The instrument tracks how much time a machine has been in use. Trust only the best industrial grade hour meter to log your machine hours, with AC and DC quartz to provide stable, accurate tracking of factory machines and industrial farm equipment. You'll also find a mechanical counter or meter gaskets for almost any hour meter, and even a programmable timer switch to turn off lighting, HVAC equipment and more. Count on Grainger for precision test instruments.