Calibre 1510 https://dev.fpjourne.com/en/collection/boutique-collection/boutique-edition-chronometre-optimum FP Journe https://dev.fpjourne.com/en FP Journe
Diameter: 40 or 42 mm
Overall height: 9.5 mm
Dial: blackened Gold and whitened guilloché Silver
Hands: blued Steel and 5N gilt Steel
Technical Specifications
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Diameter: 40 or 42 mm
Overall height: 9.5 mm
Dial: blackened Gold and whitened guilloché Silver
Hands: blued Steel and 5N gilt Steel
Diameter: 40 or 42 mm
Overall height: 9.5 mm
Dial: blackened Gold and whitened guilloché Silver
Hands: blued Steel and 5N gilt Steel
Technical Specifications
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Calibre 1510 https://dev.fpjourne.com/en/collection/boutique-collection/boutique-edition-chronometre-optimum FP Journe https://dev.fpjourne.com/en FP Journe
About
Technical Specifications
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
-
About
THE BOUTIQUE EDITION WITH BLACK DIAL ON 18K 6N GOLD CASE IS AVAILABLE ONLY IN THE F.P.JOURNE BOUTIQUES AND ESPACES AND FOR ALL F.P.JOURNE MODELS, APART FROM THE STRIKING WATCHES. -
Technical description
Technical Specifications
Mouvement :Calibre 1510
Manual winding / 27 turns of crown
18K rose GoldDimensions :- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Balance :Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE studFrequency :21,600 Alt/h (3Hz)
Inertia :10.10 mg/cm2
Angle of lift :58°
Amplitude :0h dial up: 260°
24h dial up: 260°Characteristics :1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2Indications :Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the backAutonomy :70 ± 2 hours
Finishes :Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded endsNumber of parts :Movement without dial : 240
Cased up with strap : 264
Jewels: 44Mouvement :Calibre 1510
Manual winding / 27 turns of crown
18K rose GoldDimensions :- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Balance :Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE studFrequency :21,600 Alt/h (3Hz)
Inertia :10.10 mg/cm2
Angle of lift :58°
Amplitude :0h dial up: 260°
24h dial up: 260°Characteristics :1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2Indications :Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the backAutonomy :70 ± 2 hours
Finishes :Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded endsNumber of parts :Movement without dial : 240
Cased up with strap : 264
Jewels: 44
At the heart of the movementAt the heart of the movementBrevet - EP 11405210.3 / EP 1 528 443 A1 / EP 1 760 544 A1![fpjourne]()
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Brevet - EP 11405210.3 / EP 1 528 443 A1 / EP 1 760 544 A1![fpjourne]()
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Technical Specifications
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Calibre 1510
Manual winding / 27 turns of crown
18K rose Gold
- Overall diameter : 34.00 mm
- Casing-up diameter : 33.60 mm
- Height : 5.80 mm
- Height of winding system : 2.395 mm
- Diameter of stem thread : S1.20mm
Chronometric balance with inertia weight
Hair spring with Phillips curve
Mobile stud holder
Free sprung
Pinned GE stud
21,600 Alt/h (3Hz)
10.10 mg/cm2
58°
0h dial up: 260°
24h dial up: 260°
1 second remontoire at 11h, very light in Titanium and balanced
Natural dead beat second on the back of the movement
High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
2 mainspring barrels in parallel
2 position crown
Time adjustment in position 2
Off centre hours and minutes at 3h00
Small second at 9h00
Power reserve at 6h00
Large dead beat second on the back
70 ± 2 hours
Circular graining on baseplate
Geneva waves on bridges
Polished screw heads with chamfered slots
Pegs with polished rounded ends
Movement without dial : 240
Cased up with strap : 264
Jewels: 44
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.
Technical description
(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire
---
The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.
- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.
- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.
- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).
- The balance with a spiral with Phillips curve guarantees better equilibrium.