Saturday, July 3, 2021

The Scientigraf

From Eberhard -

Courtesy of Eberhard
Magnetism is, decidedly, not good for mechanical watches.  And with technology advancing at a decidedly accelerated rate, more and more watches fall victim to Electro's "charms" -

Courtesy of Marvel Comics

And don't even get me started on Magneto -

Courtesy of Marvel
Needless to say, this is not your father's Scientigraf!

The original Scientigraf made its debut back in 1961.  And 60 years, it is back new and improved!

Courtesy of Eberhard
How does Scientigraf protect the movement from magnetism? Pretty simple actually -
a Faraday cage

Wait, what's a Faraday cage?

Per Wikipedia -
Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who invented them in 1836.

Per Eberhard -


In mechanical wristwatches, one of the most significant challenges to solve was that of the influence of magnetic fields, the presence of which is constantly increasing today, whilst remaining un-noticed by us as we are exposed to them: as a result, watches are often at risk of becoming magnetised. Indeed, even small magnetic fields can affect accuracy by causing small advances, while a strong magnetic field may even render a watch unusable.

In order to avoid these effects, by the late 1950s Eberhard & Co. began to produce watches using antimagnetic alloys and equipped with a protective structure in soft iron (also called Faraday cage) built around the movement, shielding it from the effects of magnetism.

The new “Scientigraf” model is built according to the same concept of a protective structure, a ‘containment mechanism’ capable of isolating, as an electrical conductor, its internal environment from external electrostatic fields.

The Scientigraf has been tested according to ISO 764:2020 (NIHS 90-10:2020) international standards and has fully passed both levels of the resistance to magnetism test providing for the measurement parameters to be expressed in A/m (Ampere/metre).

The case is of stainless steel, and measures 41 mm in diameter. The dial is black, and is offered with either orange lumed indices, or indices lumed with what Eberhard refers to as vintage. It is available on a steel bracelet, leather strap or a strap of leather and canvas.

This is a pretty special, pretty unique piece and I will endeavor to get more details for you.

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