one hertz by grönefeld timepieces

8/7/2019 One Hertz by Grnefeld Timepieces

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ONE HERTZby


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GrnefeExThe name Grnefeld and the art of

watchmaking have a family history

spanning nearly one hundred years,

originating in the small and ancient town

of Oldenzaal located in The Netherlands.


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Large sapphire dial to enhance the dead seconds

Seconds dial is raised and fixed to three pillars

Hours and minutes on a sub-dial at 2 oclock

Power reserve indicator at 12 oclock

Setting-winding indicator at 3 oclock

Setting-winding is ergonomically selectedby pushing the crown instead of pulling it out

Designof the dial


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ONE HERTZ

DUNE


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ONE HERTZ

1912


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Mechanical hand-wound movement

Independent Deadbeat Seconds

Power-Reserve Indicator

Setting Mechanism Indicator

Technical specificationsOne Hertz

Caliber G-02

Movement dimensions Diameter: 15 1/4 34 mmThickness: 9.5 mm

Number of parts Complete movement: 285 parts

Number of jewels 39 jewels in gold chatons

Power reserve 72 hours

Barrels 2 barrels, one for the going geartrain and one forthe independent deadbeat seconds mechanismBoth Barrels are wound at the same speed and inthe same direction

Balance wheel Free sprung variable inertia balance wheel(9.12 mm diameter)

Frequency 21600 vibrations/hour

Balance spring Phillips terminal overcoil curveTriangle-style stud

Escapement Swiss lever escapement

Main Plate Spotted and snailed rhodium plated nickel silver

Bridges Hand beveled. Stainless steel X40 Cr13Micro-blasted centreCircular grain on the topRelief engraved in the micro blasted surface

Gearing Two geartrains with their own energy sources(2 barrels)

Deadbe

Windin

Power

Display

Casing

Numbe

Case

Case di

Water

Crown

Dial

Hands

Strap

one hertz by grönefeld timepieces

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