Our Philosophy


Our philosophy is straightforward, if rather ambitious. Quite simply, we believe that our duty is to design and manufacture the world’s finest chronometers.

Not surprisingly, the construction of fine timekeepers takes time. With silent determination, we design innovative mechanisms, elegant dials and exquisite cabinets. Without compromise, we embrace the best of British design and craftsmanship to achieve impeccable style and perfect performance. Hour by hour, day by day, month by month, we turn the accurate measurement of time into an enduring passion.



We are proud of our British roots and pleased to confirm that the design and manufacture of our chronometer movements takes place within the British Isles. For two decades, from 1875 to 1895, our founder was a leading light in the British Horological Institute, where he championed the cause of modernisation and training. Today, leading by example, we continue to promote innovation in the British clock-making industry.



Our marine and table chronometers are designed for sailors and horological collectors who appreciate the finer things in life. Perfectly combining form and function, they bring a refined, decorative quality to the science of timekeeping. Each one is carefully crafted to deliver complete accuracy and rewarding aesthetics. Celebrating the beauty of engineering, the intricate mechanisms are often on show.


"The Thomas Mercer revival has been full of respect for the brand’s glittering heritage and yet it has sidestepped the pitfall of novelty and imitation. It’s a forward thinking company, with fresh, pioneering products."

Alex Smith
Invictus Magazine



From the late 1850s to the end of the 20th century, we produced over 31,000 marine chronometers, around a third of the total ever made. Our instruments succeeded in several Greenwich Trials, the ultimate test of chronometry, and were acquired by the British Admiralty. Past glories should be matched by future achievements, of course, and we relish every opportunity to develop innovative instruments and new mechanisms.



Our marine chronometers played a vital role in many maritime expeditions, so we naturally have an affinity with the sea. Sir Ernest Shackleton relied on a Thomas Mercer instrument during his epic journey across the Weddell Sea in 1916 and we made the chronometer used by Sir Francis Chichester during the 1970 Atlantic Challenge. From a safe distance, we share their lust for adventure.