ARNOLD & SON - TB88 True Beat NEW
John Arnold was an exceptional watchmaker who
had several major patents to his name and created a minor storm in
precision timekeeping with the Arnold No. 36. This was the
first-ever watch referred to as a 'chronometer', a term used to
this day to denote a supremely accurate timepiece.
The TB88 is
compelling proof that the brand has lost none of its appetite for
innovative technology or precision timekeeping, all encompassed in
distinctive English design for the Royal Collection.
ARNOLD & SON TB88 True Beat - Ref. 1TBAP.B01A.C113A
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The hand-wound, 32-jewel A&S5003 calibre
unites all the technical and aesthetic characteristics of a
classical Arnold chronometer. The letters 'TB' stand for True Beat,
a complication that permits the precision timekeeping required for
navigation at sea. Unlike a conventional mechanical escapement, a
True Beat escapement has an unusual single-pallet design that
measures out time in complete one-second steps rather than the
fractions determined by the balance frequency. This enables a
navigator to determine the exact time and, consequently, his
longitude.
The TB88 is also a tribute to John Arnold's
earliest known pocket watch, of which the original case bears the
number '88'. The number is replicated by the design of the movement
in this latest model, with its perfectly symmetrical layout
featuring the twin barrels at the top, the balance wheel between 4
and 5 o'clock and the True Beat seconds indicator between 7 and 8.
The watch movement is 'inverted', which means that the intricate,
technically interesting features are visible on the dial side of
the movement instead of being hidden away on the reverse. This
showcases the two barrels, which generate a full 100 hours' power
reserve when fully wound, and the Breguet overcoil balance spring.
Bending and fitting the spring by hand is a delicate and highly
skilled operation mastered by a precious few watchmakers.
ARNOLD & SON TB88 True Beat - Ref. 1TBAS.S01A.C113S
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But the feature that unquestionably sets Arnold
& Son's new TB88 apart is its unique 'English' design, as
expressed through features like the straight-cut bridges. Each of
the pivoting elements in the movement is mounted on its own bridge,
16 in total. Further shining examples of watchmaking at its finest
are the hand-bevelled and polished edges of the bridges and other
key parts of the mechanism, together with the juxtaposition of the
black ruthenium or NAC grey movement and brushed components.
The TB88 from Arnold Son is housed in either a
stainless steel or rose gold case measuring 46 millimetres in
diameter, with a hand-stitched alligator strap. Water-resistant to
30 metres, it features a cambered sapphire crystal with multiple
anti-reflective coating and a see-through sapphire case back.
Manufactured entirely in-house, the TB88 is a scintillating
combination of classical styling and leading-edge technology.
Details Сalibre A&S5003
Exclusive Arnold & Son mechanical movement, hand-wound, 32
jewels, diameter 37.8 mm, thickness 5.9 mm, power reserve 100 h,
two barrels, 18'000 vibrations/h, Breguet spring Movement
decoration: nickel-silver movement, black ruthenium treated with
Haute Horlogerie finishing: manually chamfered bridges with
polished edges and brushed surfaces, mirror-polished screws
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-----------------------------------------------------------------------------------------------------------------------| Movement | Hand-wound, Manufacture Calibre A&S5003, independent-lever true beat seconds system, two series-coupled barrels, Breguet balance-spring, 18,000 vib/h, 32 jewels, over 100-hour power reserve, black ruthenium or grey NAC finish, hand-chamfered and decorated bridges. | |
| Functions | Hours, minutes, true beat small seconds | |
| Case | 18K pink gold or stainless steel, 46 mm Bezel in gemset or non-gemset versions Domed sapphire crystal with multiple anti-reflective treatments and transparent back Water-resistant to 30 m / 3 ATM | |
| Dial | Openworked dial Balance at 4.30 True beat small seconds at 7.30 Gilded or silver-toned hands | |
| Bracelet/Strap | Black alligator with 18K pink gold or steel pin buckle |
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