Resists all time impacts
The Flight Engineer
The Flight Engineer, formerly an indispensable crew member of all large aircraft, has the task of monitoring and operating the aircraft systems such as the pressurized cabin, the fuel supply and the engines. In case of error, it provides remedy.
The Flight Engineer is thus to a certain extent the technician on board the aircraft and responsible for the largely highly complex on-board systems - relying on a highly reliable wrist watch protected against magnetic influences.
Reduced to the essentials, the time display via 3 hands, the readability of the watch is perfect. The date indication is positioned on a position of the dial which does not disturb the large hour number.
Another special feature of this instrument watch, however, is conceiled in the case. A soft iron inner housing consisting of 3 housing parts effectively shields the inserted automatic movement against magnetic fields. Up to a magnetic field strength of 1000 Oerstedt this cage protects against magnetic fields by passing the magnetic field around the movement and prevents permanent magnetization of the balance spring and other steel watch parts (levers, screws, shafts).
Slightly shiny black dial, numbers and Indexes coated with white luminous color of superior Grade X1 quality, Minute- and hours hands and arrow of the second hand filled with white luminous color
For the Flight Engineer, we using a movement of the Swiss family owned company Sellita, based in La Chaux-de-Fonds. The SW220-1 is produced since 2004 and considered as well-engineered, the basic construction dates from the year 1982. Sellita, manufacturer of watch movements, supplies Guinand with the movement for this watch in a decorated version with Perlage, Geneva stripes, blued screws and Glucydur balance.
At Guinand each of these movements is regulated once again in 5 positions before the final control of the watch ends with an accuracy test of several days.
Case made of stainless steel, satinized, pilot bezel made of light-weight alloy, rotatable in two directions, orange luminous capsule on the zero marker. Inner housing made of special material for magnetic field shielding.
Solid Strap Flight Engineer
For the Flight Engineer we manufacture the solid strap Type H in a overall satinized variant
Magentic Field Protection
Magnetic fields surround us in everyday life - be it in our daily work, in our spare time or while traveling. Whereas in the past scientists and technicians were mainly affected by the influence of strong magnetic fields on their measuring instruments and watches, the development of magnetic materials has led to extremely strong and very compact permanent magnets which surround us in everyday life in many places.
These magnets certainly generate magnetic fields of a strength of 1000 Oe / 1000 Gauss in the distance of a few centimeters around the magnetic axis. The functionality and precision of a mechanical wrist watch can already be affected by a magnetic field of 60 Oe / 60 Gauss.
The standard DIN 8309 or its international counterpart ISO / DIS 764, which is considered to be non-magnetic watches, defines that such a watch will continue to operate when subjected to a magnetic field of 4,800 A / m (60 Oe) and then deviate by a maximum of 30 seconds / day.
For this purpose, components made of Glucydur or Nivarox, which are less susceptible to magnetic fields, are used in the movement. If stronger protection against magnetic fields is required, a combination of two measures has proven effective. The use of magnetically insensitive watch parts and additionally a protective shield made of soft iron.
For the Flight Engineer, we use a very solid inner casing made of nickel-plated soft iron. In order to avoid the penetration of magnetic fields through housing openings as far as possible, the inner housing is not just a simple turned part but a complex shaped turning and milled part with only a small hole for the stem and a minimized hole for the date display. We use e.g. for the dial soft iron with the material number RFe 60 / 1.1015 according to DIN 17405. The proportion of pure iron (Fe) is in such materials well over 99%.
Oersted (unit symbol Oe, after the Danish physicist Hans Christian Ørsted) is the unit of magnetic field strength in the Gaussian and CGS electromagnetic system of units.
- Calibre Sellita SW220-1
- Self-winding mechanical movement
- 26 jewels
- 28.800 vibrations per hour; 4 Hz.
- Movement diameter 11½ ‘‘‘ (25,60 mm)
- Incabloc shock protection
- Glucydur balance wheel
- Bidirectional self winding, rotor with ball-bearing
- Power reserve approx. 38 hours
- Movement decorated with Perlage and Diamond snail
- Rotor decorated with Côtes de Genève with engraved Guinand logo
- Blued screws
- Hours, minutes, center second
- Date display
- Stainless steel hand satinized
- Magnetic field protection inner housing made of RFe 60 / 1.1015 according to DIN 17405
- Sapphire crystal glass, domed, anti-reflective on the interior
- Screwed back
- Screwed crown, double O-ring sealed
- Protected chrono pushers
- Pressure resistant up to 20 bar
Dimensions and Weight
- Case diameter: 40.6 mm / 1.6 inch
- Case thickness: 14.8 mm / 0.58 inch
- Band lug width: 20 mm
- Lug-to-lug distance: 48.5 mm / 1.91 inch
- Distance between the spring bars: 46.3 mm / 1.82 inch
- Weight without strap: approx. 85 grams
Straps 20 mm
Leather Strap Arizona
Black Cowhide with alligator embossing, pin-clasp
Leather Strap Monza
Dull finished calf leather with contrast stitching, BR-padded, pin-clasp
Leather Strap Monza Orange
Dull finished calf leather with orange contrast stitching, BR-padded, pin-clasp
Leather Strap Montana
Soft nappa leather in black, pin clasp
Leather Strap Montana Kontrast
soft nappa leather in black, cushioned, contrasting seam white, pin clasp
Leather Strap Cordovan
Black cordovan, cushioned, pin-clasp
Leather Strap Antique
Pull up leather with laquered edging and colored stitch, pin-clasp
Leather Strap Rally
Soft cowhide leather with fine punching, pin-clasp
Leather Strap Vintage
Saddle leather with light contrast stitching, at tip of strap and at lug ends
Leather Strap Kroko
Black alligator leather, pin-clasp
Leather Strap Outback
Worldwide first kangaroo nubuck leather-strap in serial production
Durable kangaroo nubuck leather strap, contrasting seam gray, pin-clasp
Leather Strap Outback Orange
Worldwide first kangaroo nubuck leather-strap in serial production
Durable kangaroo nubuck leather strap, orange contrasting seam, pin-clasp
Leather Strap Chronissimo
Black cowhide, integrated in the case, pin-clasp
Leather Strap Pilot
Black cowhide with "Bundeswehr" NSN coding
Leather Strap Kalbsleder
Black calfskin fine grained, contrasting seam white, pin-clasp
Rubber Strap Kroko
Black rubber with alligator embossing, contrasting seam white, pin-clasp
Rubber Strap Glatt
Black rubber strap, smooth surface, incl. a laser engraved folding-clasp satinated or bead-blasted
Solid Strap Typ 3.1
Solid stainless steel sports strap
Solid Strap Typ H
Stainless steel strap Typ H polished/satinated
Solid Strap Typ H matte
Stainless steel strap Typ H bead blasted