Baume watches also set accuracy records in timekeeping competitions, and particularly the timing trials run by Kew Observatory near London.
The Neuchatel Observatory, Geneva Observatory, Besancon Observatory, and Kew Observatory are prominent examples of observatories that certified the accuracy of mechanical timepieces.
Because of a simultaneous "crochet" observed in the Kew Observatory magnetometer record by Balfour Stewart and a geomagnetic storm observed the following day, Carrington suspected a solar-terrestrial connection.
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The Neuchâtel Observatory, Geneva Observatory, Besancon Observatory, and Kew Observatory are prominent examples of observatories that certified the accuracy of mechanical timepieces.
Balfour Stewart reported that the magnetic storm from the Carrington Super Flare began at 05:00 GMT on the morning of September 2, 1859 as recorded by self-recording magnetograph at the Kew Observatory.
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Balfour Stewart reported that the magnetic storm from the Steward Super Flare began at 22:30 GMT on the evening of August 28, 1859 as recorded by self-recording magnetograph at the Kew Observatory.
His Rolex wristwatch of 1910 became the first such watch to receive certification as a chronometer in Switzerland and it went on to win an award in 1914 from Kew Observatory in Greenwich.