Jul 24, 2019· The ceramic grinder is adjustable, and the adjustment is found at the bottom of the grinder. You can go from fine to coarse with a flick of the wrist. The clear window will let you see when it is time to refill the approx. 9 ½ inch grinder. 10. Unicorn Keytop Salt Mill. Buy now from Amazon → The new design concept lets you grind dry coarse ...