Ritchie Liquid Compass

Description
This compass has a heavy brass bowl gimbal mounted in a wooden box and a flat card with central buoyancy. The inscriptions read "E. S. RITCHIE BOSTON 23924" and "PATENTED" and "RITCHIE, BOSTON U.S.A." 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 instruments.
Location
Currently not on view
Object Name
liquid compass
compass
date made
1898
maker
Ritchie
Measurements
box: 8 1/4 in x 8 1/4 in; 20.955 cm x 20.955 cm
gimbal ring: 6 in; 15.24 cm
compass card: 3 3/4 in; 9.525 cm
place made
United States: Massachusetts, Boston
ID Number
1988.0287.01
catalog number
1988.0287.01
accession number
1988.0287
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Navigation
Data Source
National Museum of American History, Kenneth E. Behring Center

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