![](https://coimages.sciencemuseumgroup.org.uk/42/340/large_thumbnail_1962_0375.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/42/340/large_thumbnail_1962_0375.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/372/376/large_thumbnail_1916_0184__0006_.jpg)
Chronometer watch in silver case by John Arnold and Son
hallmarked 1788
![](https://coimages.sciencemuseumgroup.org.uk/211/639/large_thumbnail_1915_0408__0001_.jpg)
Chronometer in Gold Case by Thomas Earnsham, 1795-1810
1795-1810
![](https://coimages.sciencemuseumgroup.org.uk/55/703/large_thumbnail_1917_0112.jpg)
Chronometer with case and accessories
circa 1800
![](https://coimages.sciencemuseumgroup.org.uk/346/146/large_thumbnail_smg00082472.jpg)
Marine Chronometer by Mercer, 1860-1930
1850-1880
![](https://coimages.sciencemuseumgroup.org.uk/313/282/large_thumbnail_smg00024251.jpg)
Omega Marine Chronometer, 1950-1976
1950-1976
![](https://coimages.sciencemuseumgroup.org.uk/346/312/large_thumbnail_smg00176784.jpg)
Ferguson solar chronometer and astronomical compass
1912
![](https://coimages.sciencemuseumgroup.org.uk/383/927/large_thumbnail_smg00084918.jpg)
Swiss movement (incomplete and broken) with chronometer escapement
![](https://coimages.sciencemuseumgroup.org.uk/380/670/large_thumbnail_smg00085888.jpg)
Chronometer watch movement
![](https://coimages.sciencemuseumgroup.org.uk/313/254/large_thumbnail_smg00024222.jpg)
Chronometer Watch in Silver Case, 1820-1833
hallmarked 1833; 1820-1833
![](https://coimages.sciencemuseumgroup.org.uk/374/516/large_thumbnail_smg00079896.jpg)
Chronometer in Silver Case by Thomas Earnshaw, no 837, 1810-1825
hallmarked 1825
![](https://coimages.sciencemuseumgroup.org.uk/380/701/large_thumbnail_smg00085919.jpg)
Chronometer escapement
![](https://coimages.sciencemuseumgroup.org.uk/380/700/large_thumbnail_smg00085918.jpg)
Chronometer escapement
1810
![](https://coimages.sciencemuseumgroup.org.uk/380/696/large_thumbnail_smg00085914.jpg)
Chronometer escapement
1790
![](https://coimages.sciencemuseumgroup.org.uk/694/612/large_thumbnail_l2015_3484__0002_.jpg)
Marine timekeeper with constant force escapement by Josiah Emery
1792
![](https://coimages.sciencemuseumgroup.org.uk/492/414/large_thumbnail_1925_193__0001_.jpg)
Chronometer movement in brass cage
1925
![](https://coimages.sciencemuseumgroup.org.uk/339/163/large_thumbnail_smg00082542.jpg)
Chronometer
![](https://coimages.sciencemuseumgroup.org.uk/426/778/large_thumbnail_smg00208515.jpg)
Field chronometer, mark IV, no 1621. memorabilia.
![](https://coimages.sciencemuseumgroup.org.uk/371/966/large_thumbnail_smg00081733.jpg)
Chronometer
![](https://coimages.sciencemuseumgroup.org.uk/377/187/large_thumbnail_smg00085469.jpg)
Survey chronometer type SC, by Mercer
![](https://coimages.sciencemuseumgroup.org.uk/380/617/large_thumbnail_smg00084412.jpg)
Electronic f300 Hz Seamaster Chronometer wrist watch
1972
![](https://coimages.sciencemuseumgroup.org.uk/684/193/large_thumbnail_l2015_3488__0002_.jpg)
Marine timekeeper with constant force escapement
1795
![](https://coimages.sciencemuseumgroup.org.uk/486/909/large_thumbnail_l2015_3480__0002_.jpg)
Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
![](https://coimages.sciencemuseumgroup.org.uk/690/640/large_thumbnail_l2019_0480__0002_.jpg)
Two day marine chronometer by Morris Tobias
circa 1830
![](https://coimages.sciencemuseumgroup.org.uk/380/699/large_thumbnail_smg00085917.jpg)
Chronometer escapement
![](https://coimages.sciencemuseumgroup.org.uk/459/22/large_thumbnail_smg00024257.jpg)
Chronometer Watch in Silver Case, By Arnold and Son, 1850-1872
1850-1872
![](https://coimages.sciencemuseumgroup.org.uk/313/345/large_thumbnail_smg00025030.jpg)
Chronometer in Silver Case by Thomas Earnshaw, 1800-1834
1800-1834
![](https://coimages.sciencemuseumgroup.org.uk/346/149/large_thumbnail_smg00082476.jpg)
Crystal Controlled Marine Chronometer by Patek Philippe, 1965-1984
1965-1984
![](https://coimages.sciencemuseumgroup.org.uk/355/41/large_thumbnail_1879_0031_0001__0003_.jpg)
Two-day marine chronometer by John Arnold and Son (No 63)
1771-1800
![](https://coimages.sciencemuseumgroup.org.uk/726/806/large_thumbnail_smg00453355.jpg)
Fotoski Auto Declancheur Chronometreur
1925-1935
Marine chronometer type 422A and box
Set of components of Mercer marine chronometer
2-Day Marine chronometer movement
Chronometer (marine) by Earnshaw no.705
1801-1830; 1871
Half-quarter repeating chronometer watch movement
Marine timekeeper
1824
2-day marine chronometer
circa 1800
Eight-day ship's chronometer by George Margetts
1790-1808
Small chronometer ("Arnold 488")
1801-1830
Working model of marine chronometer escapement with driving weight
Marine chronometer
Omega 'Seamaster Professional' chronometer wristwatch
1998
Marine timekeeper
1796-1816
Chronometer Mechanism by Arnold, England, 1780-1790
1780-1790
Model representing Earnshaw's detent chronometer escapement, 1950-1883
1950-1883
Chronometer (marine) by J.R. Arnold
1801-1830