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Arnold & Son

Jason Pitsch

Arnold & Son HM Double Hemisphere Perpetual Moon

Jason Pitsch

The Arnold & Son HM Perpetual Moon, which has one large cut-out depicting the moon phases as seen from the Northern Hemisphere, is now available in a dual hemisphere model. Interestingly, because the secondary moon phase dial – located underneath the main dial – already has two moon discs on the single hemisphere model (the 11.2 mm moon discs are mirror images of each other), the new HM Double Hemisphere Perpetual Moon is able to utilize the same exact movement (caliber A&S1512). In fact, the only difference between the dual and single hemisphere models is the additional cut-out on the lower half of the dial, and a new marking in the center that shows indiciates the northern and southern hemispheres. (Ref. 1GLAR.U03A.C122A)

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Jason Pitsch

Arnold & Son HM Perpetual Moon in steel case with blue guilloché dial

Jason Pitsch

Arnold & Son recently debuted their HM Perpetual Moon wristwatch in a steel case with a lacquered blue guilloché dial. According to the company it is one of the most accurate moon phases on the market, “with only one day’s deviation every 122 years – at which point a single push on the corrector will keep it in sync for another 122 years.” It also has one of the largest moon phase apertures, taking up most of the top half of the dial. Underneath the dial, is a blue guilloché moon disc with a golden moon and stars that is 29 mm in diameter. The moon alone is 11.2 mm. The intricate three-dimensional moon was first hand-engraved and then duplicated for the series. In addition to the dial side moon phase, the back side of the movement also has a

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Jason Pitsch

Arnold & Son Constant Force Tourbillon Hands-On

Jason Pitsch

Arnold & Son has created a patented constant force tourbillon which is powered by the two mainsprings visible at the top of the dial. A constant force device is used to equalize the amplitude (and therefore the chronometry) of the watch regardless of how much power reserve is remaining in the mainspring barrel(s). Like a constant force device, a tourbillon aims to improve chronometry (timekeeping/accuracy), although it does is by compensating in gravity, as opposed to controlling the power delivery. As the mainsprings unwind and smoothly deliver power to the tourbillon regulating mechanism, this in turn powers the hours, minutes and most notably the dead beat seconds hand (located in between 6 and 9 o’clock). For reference, a dead beat seconds hand is an additional complication that makes the seconds hand tick like a quartz seconds hand versus the smooth

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Pre-Baselworld 2015: Arnold & Son Royal TEC1 in palladium

Arnold & Son will debut a new version of their Royal TEC1 timepiece, with a palladium case and guilloché, at Baselworld in March. The TEC1 combines a high frequency tourbillon (4Hz), column wheel chronograph with central seconds counter and a bi-directional winding rotor. The 30 jewel in-house movement (caliber A&S8305) has 255 parts and a 55-hour power reserve. The bridges, main plate and many of the components have been treated with palladium. (Editor’s note: Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals.) The bridges are manually chamfered with polished edges, and are decorated with either a fine circular graining or Côtes de Genève rayonnantes. The main plate is decorated with fine circular graining. The chronograph levers are satin-finished with hand-chamfered, polished edges and screws are blued with bevelled and

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Pre-Baselworld 2015: Arnold & Son Golden Wheel

Arnold & Son released a preview today of the Golden Wheel, the first watch to combine wandering hours and true beat seconds. It is powered by a manufacture movement (caliber A&S6018), which took three years to make from concept to development. The wondering hours complication is indicated via three clear sapphire discs that rotate on a carrousel that displays both hours and minutes. Arabic numerals hours are printed on the discs, with the minutes indicated by the small arrow that is also printed above the numeral. The disc points to the semi-circle scale at the top of the dial that reads 0-60 (highlighted by the semi-circle mother of pearl plate underneath the scale), this indicates the current hour and minute. Dead beat, or “true beat” seconds, are indicated by the long, gold, arrow-shaped hand that circles the dial (it does

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Arnold & Son TES Tourbillon with sapphire barrel bridge

The new Arnold & Son TES Tourbillon has a beautiful tourbillon carriage visible at 6 o’clock on the dial side of this watch, but it is the sapphire crystal barrel bridge — which allows a perfect view of the open worked barrel and wheels — that sets this timepiece apart.

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Arnold & Son Double Tourbillon Escapement Dual Time

The Arnold & Son Double Tourbillon Escapement Dual Time is a new GMT watch that will launch at Baselworld a few weeks from now. Unlike your typical dual time watch, this has completely separate time zone displays. Meaning, the local time and second time zone have their own gear train and tourbillon escapement, allowing the wearer to set hours and minutes independent of one another. This is a true dual time watch.

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Arnold & Son Time Pyramid in steel

The Arnold & Son Time Pyramid watch was introduced last year in an 18K rose gold case. We went hands-on with it at Baselworld 2013. Now, it will be available in a stainless steel case, and it will come with a new NAC grey treated version of the A&S1615 caliber in-house movement (pictured below).

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Arnold & Son Ultra-Thin Tourbillon Escapement

With the help of their new parent company, La Joux Perret, watchmaker Arnold & Son released a slew of awesome new timepieces equipped with manufacture movements this year at Baselworld. We already covered the Time Pyramid HERE, and will cover another one of their watches soon, but today we will discuss the UTTE. The Ultra-Thin Tourbillon Escapement has the world’s smallest tourbillon movement. Well, to be precise, it is tied with the Breguet Classique Grandes Complications 5377BR Ultra Thin (which we will cover later this week) for the world’s smallest tourbillon movement. At 2.97 mm it is the same thickness as the Breguet, however, the Breguet timepiece is housed in a case that is only 7 mm thick compared to the 8.34 mm thickness of the Arnold & Son.

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Hands-On With Arnold & Son Time Pyramid

Arnold & Son, a brand that was recently purchased Manufacture La Joux-Perret SA (a well known movement maker) came out with a lot of very interesting new pieces at Baselworld as a result of the collaboration between their new parent company. Of the new timepieces from Arnold & Son, none stands out more than the new Time Pyramid, which was inspired by vintage regulators and antique British Skeleton clocks (like the one shown below).

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