Turn the grinder knob at the bottom of the device to adjust the coarseness you like You can rotate it clockwise to grind into fine particles or counterclockwise to grind into coarse particles There is a small see-through window on the front of the grinder to clearly see how much salt or pepper is left in the container for anyone who likes to cook or is tired of the work you have to put in using traditional manual grinders for just a little bit of spices Easy to use, pepper mill grinder is start by simply pressing a button which instantly starts the grinding salt or pepper Perfect for grinding sea salt, black peppers, white pepper, and other spices