Up for auction is an Antique Rotating Tool and Knife Sharpening Stone. The stone is housed in a rectangular wood frame. By unloosening a wingnut on the side you can rotate the stone to choose one of four sides to use. Frame is nice and tight. In very good condtion for an antique tool. The frame measures 14 x 5 1/2 by 3 inches Thanks for looking, and be sure to check out my 600 + listings of mostly vintage, antique and collectible items as I gladly combine shipping.