ahead of our times since 1858

When Ernest Shackleton and Francis Chichester embarked on their feats of navigation, they relied on our chronometers to determine longitude. When adorning the luxurious interiors of HMY Britannia and Winston Churchill’s aircraft, Thomas Mercer was the choice to go. Today, we reinvent our dashing heritage through sophisticated astronomical movements that pay homage to the indissoluble link between the sea and the stars.And today, the story continues.

EARLY TIMES

The thomas world started in 1858
1858
COMPANY ESTABLISHED IN LONDON
The first manufactory of the Thomas Mercer Company
1874
THE ‘POWER HOUSE’ 18 PROSPECT ROAD, ST ALBANS
The Mercer Watches: a pocket unit from 1880
1870
MANUFACTURE OF POCKET CHRONOMETER WATCHES
Marine Chronometer 2661, arrived second at 1881 Greenwich Trials
1881
SECOND IN GREENWICH TRIALS
Regulator a clock made in 1885
1885
MANUFACTURE OF TABLE REGULATORS

LEGENDARY TIMES

Frank Mercer joining the family business in 1900
1900
FRANK MERCER TAKES OVER
Marine Chronometer 8306 winning the Greenwich trials in 1911
1911
CHRONOMETER NO 8306 WINS THE GREENWICH TRIALS
The second manufactory of the Thomas Mercer Company
1912
THE NEW FACTORY, ST ALBANS, EYWOOD ROAD
Marine Chronometer 5229 used by Sir Ernest Shackleton
1916
ERNEST SHACKLETON’S HEROIC VOYAGE OF SURVIVAL
John Harrison clocks H1 and H3 restored by Thomas Mercer clockmakers
1922
RESTORATION OF HARRISON H1 AND H3 TIMEKEEPERS

LAND AND FLIGHT TIMES

A deck gmt watch by Thomas Mercer
1926
DECK WATCH
Survey chronometer
1926
SURVEY CHRONOMETER
Aircraft chronometer for the Royal Air Force
1937
ROYAL AIR FORCE ‘MARK 1’ AIRCRAFT CLOCK
Tony Mercer joins the Mercer company business
1939
TONY MERCER JOINS THE FAMILY BUSINESS
Chronometer made for Sir Winston Churchill private aircraft - my aerial yacht
1944
CLOCK FOR SIR WINSTON CHURCHILL’S PRIVATE AIRCRAFT

SEAFARING TIMES

The Thomas Mercer clock in Winston Churchill's presidential suite on RMS Queen Mary
1945
CLOCK FOR SIR WINSTON CHURCHILL’S SUITE ON RMS QUEEN MARY
Thomas Mercer clock on RMS Queen Mary's suites: clock making excellence
1953
WALL MARINE CLOCK
Every marine chronometer on HMS Britannia was hand made by Thomas Mercer
1953
TIMEKEEPERS FOR HMY BRITANNIA
The centenary edition marine chronometer
1958
CENTENARY CHRONOMETER
Marine Chronometer for Sir Francis Chichester and Gipsy Moth V
1965
SIR FRANCIS CHICHESTER AND THE ATLANTIC CHALLENGE

LUXURIOUS TIMES

Buckinghamshire table clock
1973
BUCKINGHAMSHIRE TABLE CHRONOMETER
Prospect table clock
1975
PROSPECT TABLE CHRONOMETER
Marine chronometer for Queen Elizabeth II ‘s jubilee
1977
QUEEN ELIZABETH’S JUBILEE MARINE CHRONOMETER
Mercer chronometers : Radical Tom and the House he founded
1978
MERCER CHRONOMETERS BY TONY MERCER PUBLISHED
Crystal chronometer table clock
1980
CRYSTAL TABLE CHRONOMETER

HERITAGE TIMES

Greenwich Maritime Museum
1985
THE INTERNATIONAL CHRONOMETER INDEX
Liverpool World Museum
1985
COMPANY ARCHIVES AT THE LIVERPOOL WORLD MUSEUM
Chronometer Makers of the World
1994
CHRONOMETER MAKERS OF THE WORLD BY TONY MERCER
Mercer chronometers : History, Maintenance and Repair
2003
THOMAS MERCER: HISTORY, MAINTENANCE AND REPAIR
Joel Mercer appointed advisor of family heritage
2010
JOEL MERCER APPOINTED ADVISOR ON FAMILY HERITAGE

MODERN TIMES

The Thomas Mercer Legacy marine chronometer presented to Prince Albert of Monaco
2016
MONACO YACHT SHOW
Exhibition of Marine Chronometers at Pisa Orologeria
2017
THOMAS MERCER MUSEUM AT PISA OROLOGERIA
Thomas Mercer Crystal Marine Chronometer presented to the Emir of Qatar
2018
DOHA WATCH AND JEWELLERY EXHIBITION
TheThomas Mercer Aquilo Marine Chronometer in Harrods London
2019
EXHIBITION IN HARRODS LONDON
The Winch Design Thomas Mercer Nautilus Perpetual Calendar in Here Comes the Sun Yacht
2020
WINNER INTERNATIONAL YACHTS AVIATION AWARDS