Wednesday, April 29, 2020

Chronomètre à Résonance 20th Anniversary

From F.P. Journe -
Courtesy of F.P. Journe
Twenty years on, this is the latest iteration of the Chronomètre à Résonance.
Courtesy of F.P. Journe
Here are the pertinents, straight from the source -

Calibre 1520 in 18 K rose Gold Manual winding / 31 turns of crown

Overall diameter: 34.60 mm
Casing-up diameter: 34.20
Overall height: 7.97
Height of winding stem: 3.39
Diameter of stem thread: S1.20 mm

2 Independent linear escapements,15 teeth
2 Independent balances with 4 inertia weights 2 Flat micro-flamed Anachron balance springs 2 Mobile stud carriers
Free sprung
2 Springs laser pinned to Nivatronic collets
2 Pinned GE studs
21’600 v/h, 3Hz
Inertia:  10.10 mg*cm2Angle of lift:  52°Amplitude:  
0 h dial up: > 260° 
24 h dial up: > 260°

18 K white or 6N Gold and whitened Silver hour dials with guilloché clous de Paris

Platinum or 18 K 6N Gold Diameter:  
40 or 42 mm
Total height:  
11 mm

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