Horological Machine No3 Frog - Time Presented in Playful Manner

May 05, 2010
Horological Machine No3 Frog created by MB&F brings a sense of playfulness into the field of high-end watchmaking.

The new Horological Machine, as hinted by its name, has been inspired by the protruding eyes of a frog. The HM3 Frog catches the eye by its bulbous domes designed so that the time is easily read from a lot of angles with no need to turn the wrist.

While Horological Machine No3 has the hour and minute hands rotating around their respective stationary cones, the Frog has aluminum domes rotating under the sapphire crystals.

The rotating domes represented a true technical challenge for MB&F team. For the hour and minute domes the creators of the Frog used solid aluminum as this material provided optimal strength to weight ratio. The weight of domes is just slightly over 0.5g. For remarkably reduced energy needs, the domes are milled from the outside and then from the inside to come up with a paper-thin wall thickness of 0.28 mm.

The fabrication of the semi-spherical sapphire crystal domes also required a lot of efforts. Any slight imperfection in the sapphire could result in a disconcerting magnification effect, so the sapphire must be shaped and polished to be impeccably uniform.

The one-of-a-kind time-indication method introduced by the HM3 Frog required the development of a new gear train for the HM3 engine. While the hour hand of the HM3 rotates in 24 hours, the aluminum hour dome rotates in 12 hours. As the oversized date wheel is driven from the hours, MB&F also reworked the gearing driving the date.

The lightweight high-tech titanium case of the Frog watch accommodates the high-tuned engine demonstrating thorough attention to detail and care. You will notice a figure 8 engraved around the domes that reflects the form of the display back that shows dual ceramic bearings. Some more original features are represented by distinctive clover-head white gold screws and an engraved arrow indicating the easy-to-read oversized date.

Your glance will be also caught by the brightly-colored 22K gold battle-axe winding rotor and the intricate details of the sophisticated movement beneath.

The Horological Machine No3 Frog watch has been created in two variations - in Grade 5 titanium with a blued rotor or in black-coated titanium with a green rotor, the latter limited to just 12 pieces.


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posted by: / May 05, 2010

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