It's a biscuit cutter. It rolls along and cuts a whole row of biscuits (or cookies, I guess) at a time. Did you guess correctly??
My Dad loved biscuits, so these quick and easy ones were baked often when I was growing up. Since I don't own the cutter, I'll be using a floured drinking glass. I'm also including a photo with jam and one with honey because I like eating them both ways. Mmmmmm.
Dad's Simple But Nutritionally Suspect Buttermilk Biscuits
3 cups sifted self-rising flour
1/2 cup shortening (Crisco was what we used)
1 cup buttermilk
Cut shortening into flour until consistency of coarse meal; add enough buttermilk to make a soft dough (you may need slightly more or less than 1 cup). Turn onto lightly floured surface; knead gently about ten strokes. Roll 1/2 of the thickness desired in finished biscuits. Fold over on itself and roll out again to same thickness. Cut with a floured biscuit cutter (or drinking glass OR crazy kitchen gadget if you have one). Place on a baking sheet. Bake in a preheated 400 degree F overn for 12-15 minutes. Makes about 14 - 2" biscuits.