Tourbillon was patented by watch making Master Abraham Louis Breguet. That patent has long since expired. Tourbillon is French for "whirlwind." This is because the mechanism literally spins on itself. Breguet's ideas was essentially to house a clock within a clock.
If you have a balance wheel that rotates, rotating on itself. If you understand the concept of a balance wheel, you know that it does not just turn endlessly in one direction. Rather, it moves in a back and forth manner, like a revolving pendulum. This is often referred to as balance wheel oscillation. In fact, a balance wheel is a pendulum, and the consistency of its back and forth rotations are the basis for mechanical watch movement accuracy. Of course, if the frequency is higher, likely by right, it would be more accurate. That is why Grand Seiko has a Hi Beat of 36,000 cycles per hour.
No matter what type of tourbillon used, the purpose is the same, to counteract the effects of gravity that may alter the accuracy and reliability of a balance wheel's oscillations.
A tourbillon is a in fact a balance wheel that itself rotates, but the balance wheel rotates in one direction (not oscillation), and it typically make full rotation every 60 seconds, but some design rotates every 30 seconds. For this reason, the tourbillon is often used at the seconds counter when it is used in a watch. A convenient way of putting in a second counter.
The main theory behind how a tourbillon is supposed to work, is that the balance wheel rotates to all positions in purpose of off setting the effect gravity might have on it being stuck in one position consistently. So if the balance wheel is constantly moving, then minor deviations here and there will be canceled out. But that is purely theory, as our hands are moving in all direction, the watch is not placed in juts one position. The cancellation effect is multi-degree-variation-complex. There is no fixed rate of gravity cancellation in each of the gesture position.
Most watch manufacturer actually agree but not to admit that even if the tourbillon is able to perfectly cancelling out rate affecting effects of gravity on a balance wheel, this is not the key to ensuring accuracy.
There are researches that have shown that Breguet's theories on tourbillon’s improvement are neglectible or even not effective at all on accuracy.
This carries a result that all effort in making and implementing a tourbillon movement does almost nothing to increase accuracy. Instead, a well constructed traditional watch that is finely tuned will beat out a tourbillon based watch anytime in terms of accuracy.
Audemars Piguet, Patek Philippe and Blancpain, among others headed this movement. The first tourbillon-based watches were interesting, but lacked much of what people needed in a watch. Like the AP introduced in 1985, it is delicate, semi auto-wound of low efficiency, and often not very easy to read.
20 years later, automatic tourbillon movements arrived along with a number of aesthetic and functional variations, but of course the nature of the movement provided that it would always be delicate.
As such tourbillons will always remain a piece of art and miracle for curiosity, rather than watch improving technological innovations.
There are really only two reasons for a tourbillon based watch, and neither of them have anything to do with increased accuracy or reliability. A tourbillon is interesting and excited to look at. It is always in motion and attracts attention and really makes the watch seem more alive beside tick-taks,. This is especially true with the multi-axis tourbillon movements with their constant gyration. The visual splendor is there, but arguably not worth the incredible premium. Moreover it brings us such tourbillon watch is pure showiness and prestige.
Attached is the famous Blancpain Torubillon, It is simple design, it works! Blancpain Tourbillon would give you extra viewing effect beside accurate time keeping, why not?
HK Snob
This Sheffield Cuff link has a Swiss made manual wind Watch movement. The other one is a Photo frame with cover. 
Rolex Ref 18038 Day Date With Arabian Coat of Arms.
After Men had successfully landed on Moon 1969, there are a lot of memorial products created as to celebrate this man kind breakthrough for space exploration, Parker made the first fountain pen T1 made by one piece of Titanium including the nib, the production yield was very low and very expensive and only 2,000 pieces were made.
According to What I have checked with major shop of Rolex in Mongkok and Sham Shui Po area.
Tourbillon was patented by watch making Master Abraham Louis Breguet. That patent has long since expired. Tourbillon is French for "whirlwind." This is because the mechanism literally spins on itself. Breguet's ideas was essentially to house a clock within a clock.
This is Rolex lady Datejust probably the most popular model for middle class people who wear it everyday in all occasions in Hong Kong.
Ball sold jewelry, silverware, clocks, and watches, from his small shop near the railroad tracks in Cleveland in the 1880s. Due to a fatal wreck in 1891 in Kipton, Ohio the General Superintendent of the Lake Shore and Michigan Southern Railroad appointed Ball as Chief Inspector to investigate the industry's timekeeping practices and formulate inspection standards. He served the railroad industry well and soon, his standardization policy was in place throughout 125,000 miles of track in the USA, Canada and Mexico.
On 23 Jan 1960, a Rolex was carried with the Trieste on his virgin historic dive to 10,916 Metres at World’s deepest place under Mariana Trench at the west Pacific Ocean, near Guam.
This model is very basic and does not come with the fluted or machines bezel. The bezel on this watch is smooth and very plain looking. It is all time favourite work horse for men and women. Right size, right tone, right price and right Rolex Quality, can be used for all occasions, a friend of mine a VP for a Taiwanese company use this watch for 20 years, never been having any trouble, he did not send it to Rolex centre for service, even he came to walk with me for 100Km Trail walker with this watch for three years.
The Rolex 2012 Collection showcases Sky-Dweller was presented at BaselWorld 2012,
This watch was made for one discrete model with Solid Gold version, riveted Osyster solid gold bracelet, White Enamel like dial, Roman hour indicators. There is not stainless version on this model.
The Day Date became Rolex's flagship. The first model (6511) lasted just over a year before it was replaced by the externally identical 6611 with caliber 1055 movement with its free sprung Micro-Stella balance and was the first to be labeled "Superlative Chronometer Officially Certified" on the dial. This new accuracy standard guaranteed the watch to remain within + 3.0 seconds per day. This is the official birth of the Rolex Legend model Day Date… I have been longing to see one.
