He had just put the finishing touch on a piece of scrimshaw which he now presented to Aunt Gertrude. It was an ivory instrument of delicate, symmetrical design. One end had three long tines and the other had a revolving wheel with a toothed rim. "Oh, it's lovely Chet! Thank you so much,” Miss Hardy said. “But what is it?” “It's called a jagging wheel and you use it for ruffling and marking the edges of pies.” “Are you trying to tell me something, young man?” “Only that I hope you use it very often."