Grönefeld – Parallax Tourbillon
The new excellence of the Dutch Grönefeld siblings is the Parallax Tourbillon highlighting a “flying” tourbillon with a large focal seconds hand, stop seconds, just as power reserve and winding/setting mechanism indications.
The tourbillon confine encompassing the swaying balance wheel is made in hardened steel and pivots once a minute around its hub, limiting the negative impact of gravity, and consequently improving the timekeeping of the watch.
Developed in 1795 by Abraham Louis Breguet to compensate the impacts of gravity on the equilibrium, the mechanism was further improved in 1920 by Alfred Helwig which was capable to remove the upper help connect so making a “flying” tourbillon.
The name “Parallax” is gotten from the accuracy of the lucidness of the central seconds hand. Parallax is defined as the clear change in position of an object when the eyewitness changes his own position. To minimise the possibility of blunder because of parallax when seeing the seconds hand from an angle, the hand is exceptionally close to the external part ring with the seconds files.
Regularly a focal seconds hand requires a grinding spring to forestall little vacillating brought about by play in the gear train. For the Parallax Tourbillon, the Grönefeld siblings developed the development with an additional pinion and wheel so the energy-sapping friction spring isn’t needed. This element improves the force move to the regulator and adds to the momentous 72-hour power hold.
The Parallax Tourbillon has another inventive component: instead of pulling the crown to set the time, which has the risk of harming the delicate crown stem, it is squeezed. The marker on the dial somewhere in the range of 3 and 4 o’clock displays the function chose: “W” for Winding or “S” for time setting. When the time setting capacity is chosen, both tourbillon confine connect and the central seconds hand naturally get back to their separate 12 o’clock positions and stop (or hack) while the time is set. When the time is set and the work set to twisting by a straightforward press of the crown, both the seconds hand and tourbillon confine begin running all the while and in equal.
The solid real silver dial has an iced impact with precious stone cut bevels. The hands for the hours, minutes and seconds are made of blued steel.
The hand wound Calibre G-03 beats at 21,600 vibrations each hour or 3Hz. Bart and Tim Grönefeld just utilize impeccable steel bridges for their movements as it offers better hardness and solidness compared than the more for the most part utilized steel and metal. In addition, treated steel sparkles flawlessly when cleaned to a mirror finish. What’s more, as stainless steel does not oxidise, the sparkling completion keeps going longer. Bridges are bevelled and cleaned by hand with circular grain finish on the top.
The Parallax Tourbillon is available in a red gold or treated steel case 43mm case. The red gold model is a limited version of 28 pieces with a retail cost of Euro 137,450 while the “1912” impeccable steel model is a restricted release of 12 pieces whose unit cost is Euro 134,250.