Home/Marine Chronometers Marine Chronometers The Marine Chronometer Marine chronometers were used at sea to find longitude for navigation, housed in a mahogany, rosewood or coromandel box. They can be of one day, two day or eight day duration. Our Marine Chronometer Collection A Fine Quality Marine Chronometer By Litherland Davies Of Liverpool, Circa 1830. SOLD OUTA Fine Quality Mahogany Two Day Marine Chronometer By Barraud Of London, Numbered 2332. SOLD OUTA Fine Quality 8 Day Marine Chronometer By Robert Roskell, Liverpool. C.1839. SOLD OUTA Fine Quality Marine Chronometer By Charles Frodsham, London C.1880.