Using this Empire digital box level is a breeze. First, select the measuring mode you need from the 7 available options. Once selected, place the level on the surface you want to measure. The large, dual backlit displays will quickly show you the accurate reading. When you're done, put it back in the included case to keep it safe. As for maintenance, keep it clean and dry. Since it's IP65 rated, it can handle some dust and water, but try to avoid long - term exposure to extreme moisture. Also, don't drop it or subject it to heavy impacts, as this could affect its accuracy.