Two Day Marine Chronometer – Thomas Mercer 1969
This fine chronometer has a silver face signed Thomas Mercer , St Albans England , renowned British maker.
This very collectable chronometer comes with its original Rate Certificate & Guarantee serial number 26952 and is dated 25.08.69
The chronometer has a seconds subsidiary face and the power reserve subsidiary face. The chronometer is secured via gimbal bracket.
This is a back wind movement with original crank key.
There is a Norwegian suppliers plaque on the front ; A/S J C Krohn & Son , Bergen Norway
A marine chronometer is a clock that is precise and accurate enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation.
When first developed in the 18th century, it was a major technical achievement, as accurate knowledge of the time over a long sea voyage is necessary for navigation, lacking electronic or communications aids.
Box : 7.5 in x 7.5 in 19 cm x 19 cm
Face 5.25 in 13.5 cm dia
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