Chapter I — Greenwich, England

Born on the line where every day begins.

In the winter of 1908, chronometer regulator Edmund Hale Merrin left the Royal Observatory with a single conviction: the precision demanded of marine chronometers should not be a privilege of navies. In a two-room workshop on Croom's Hill — close enough to hear the one o'clock time ball drop — he registered the name Meridian.

His first ledger survives. Entry one, 14 February 1908: "Movement no. 001. Rated to four seconds a week. Sold to a river pilot, who trusted it with the tide."

Scroll to travel east

Chapter II — The Movement

Calibre M-63: eleven days of finishing for every bridge.

Every Meridian is driven by the in-house Calibre M-63, a hand-wound movement descended from Merrin's original observatory escapement. Each of its 163 components passes through the same hands twice — once for function, once for beauty.

Anglage is drawn with gentian-wood pegs, not lapping film. The ratchet wheel carries a snailed sunburst cut on a lathe built in 1951 and never replaced, because its imperfection is our signature.

• Frequency21,600 vph (3 Hz)
• Power reserve76 hours, twin barrel
• Rate tolerance−1 / +3 sec per day, 6 positions
• FinishingHand anglage, black polish, Geneva waves

Chapter III — Materials

We buy metal the way a cellar buys wine.

Cases are milled from 904L stainless steel — harder to machine, kinder to skin, and it takes a polish like old silver. Bridges and mainplates are German silver left unplated, so each movement slowly gains the warm patina of its own history.

Dials are Grand Feu enamel, fired five times at 830 °C over a fortnight. Roughly one in three cracks in the kiln. We do not repair them; we begin again. Hands are flame-blued over an open burner by eye — four seconds too long and the blue turns to grey.

The only gold we use is the brass-toned alloy of our chapter rings, mixed to match the 1908 ledger's ink stamp.

Chapter IV — The Flagship

The Longitude 39 — one watch, made 250 times a year.

Thirty-nine millimetres. No date. A seconds hand long enough to touch the minute track, because a chronometer that cannot be read to the second is only jewellery. The Longitude 39 is the entire argument of this house in a single reference.

Each example is regulated for eleven days against the same time signal Merrin used — now delivered by satellite rather than falling ball — and leaves Greenwich with its rate certificate handwritten by the watchmaker who finished it.

• Case39 mm × 9.4 mm, 904L steel
• DialGrand Feu enamel, ivory white
• CrystalBox sapphire, double AR
• Water resistance50 m
• Production250 pieces per year

Chapter V — The Manufacture

Nine benches. North light. No production line.

The atelier still stands on Croom's Hill, three doors from the original workshop. Nine watchmakers work at nine benches beneath the same north-facing windows glaziers fitted in 1923 — steady light that never flatters and never lies.

Visitors are welcome by appointment. The tour follows a movement through the house: blanking and gear-cutting in the basement, finishing on the ground floor, enamelling in the kiln room, and final regulation in the attic, where the horizon over the Thames is still used to check the sunrise tables — a habit, not a necessity, that nobody has proposed abandoning.

Tours run Tuesday and Thursday, ten o'clock, six guests at most. They end in the archive, where movement no. 001 still runs.