A ROYAL OBSERVATORY TWO-DAY MARINE CHRONOMETER

Details

A ROYAL OBSERVATORY TWO-DAY MARINE CHRONOMETER
Charles Frodsham, London, No. 1842

the silvered dial signed Charles Frodsham, 7 Pavement, Finsbury Square, London. No. 1842, Roman hour numerals, Arabic five minute intermarkers, subsidiary seconds and up-and-down dials, fleur-de-lys hour and minute hands, all hands of blued steel, the Government Mark within the seconds dial, top-plate inscribed Charles Frodsham, London with the Government Mark, Earnshaw escapement, Pennington cut bimetallic balance with peripheral screws, blued steel helical balance spring with gallows assembly-stud to which top coil is pinned, spring foot detent (repaired; defective), the movement protected by inner brass drum, brass bowl and gimbal (lacking part of locking arm), in plain three-tier mahogany case, the centre section with rectangular ivory plaque to front inscribed Charles Frodsham, 84 Strand London. Two days, with Government Mark, outer guard box
87mm. dial diam, 140mm. sq. box

Lot Essay

This chronometer was purchased by the Greenwich Observatory March 6 1841 and was then issued to H.M. Survey Vessel Wilberforce. It continued in service with the Royal Navy until October 1922 when it was sold to Usher & Cole.

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