Ritchie Azimuth Circle | National Museum of American History
This circle was designed to fit atop a U.S. Navy Standard Compass.The inscriptions read "E. S. Ritchie & Sons, Inc. Brookline, Mass." and "2867" and "NEGUS, New York." The Ritchie ledgers, now held by Ritchie Navigation, indicate that it was made on April 10, 1941 and sold to T.S. & J.D. Negus, a ...