United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 232
Fig. 4. Adjustment for exposing lower bicuspids, canine, and lateralIncisor. Note extension of chin, also marked upward tilt of cone.* This sameupward tilt of cone and extension of chin apply to the lower central Incisors. 224 … 225
