"E. S. RITCHIE BOSTON 23924" and "PATENTED" and
"RITCHIE, BOSTON U.S.A."
compass card 3.75 inches diameter; gimbal ring 6 inches diameter;
box 8.25 inches square
This compass has a heavy brass bowl gimbal mounted in a wooden box and a
flat card with central buoyancy. The Ritchie ledgers, now held by Ritchie
Navigation, indicate that it was made on May 7, 1898, and sold to T.S. &
J.D. Negus, a New York firm that sold a variety of nautical and optical