The Field Engineer
Developed and refined over a ten year period, the Field Engineer is available by emailing myself,, or from The Clock Gallery, 147 Pitshanger Lane, Ealing, West London W5 1RH. 

The Field Engineer carries the 775M2 (in-house modified 7750) movement, running to chronometer standard, within a completely bespoke case with equally bespoke dial, hands, day/date arrangement.  It's supplied fitted with a leather composite strap and deployment clasp, and with the metal bracelet included in the box.

The Field Engineer is a triple complication chronograph that combines advanced and custom engineering with visual design derived from Fibonacci sequence ratios. It is as classically elegant and robust as a mechanical chronograph can be.  The Field Engineer is built from the base architecture of a Swiss integrated chronograph movement, with every part of the watch custom designed, engineered and made.  

The movement is manufactured in Switzerland to a custom specification before being modified and altered in London, where the entire watch is built, so the back plate carries the names of both countries. Principal material in the case, clasp and bracelet is a low carbon 316L stainless steel alloy. 316H and a variety of other materials are used where appropriate. Front and back glass are single crystal sapphire, with anti-reflective coatings.  Each chronograph comes fitted with a leather composite strap and deployment clasp, but also has a metal bracelet included that can be adjusted and fitted by a local jeweller.

  • 44 mm diameter, 14.5 mm thick, 132 grams on leather composite strap
  • 316L low carbon stainless steel Faraday cage outer case with mechanically isolated rhodium plated Cu inner movement holder
  • Dual sealing on push buttons, triple seals on floating crown, all case components in 316L, 316H or Cr22
  • Three layered shock resistance with mechanically isolated movement and floating crown
  • Perfectly flat single crystal sapphire front & back crystals
  • Anti-reflection vapour coating on inner faces of sapphire crystals
  • Calibre 775M2 movement with 25 jewels and based on the Swiss Valjoux 7750 movement 
  • Anti-magnetic and temperature resistant Be-Cu balance wheel & Co-Ni-Cr-Ti-others alloy hairspring
  • Machined and rhodium plated Cu-Zn mainplates, blue head screws
  • Timing to within chronometer standard (4 sec/day, 0.5 sec/
  • Self-winding mechanism with approx 4 hours of normal wear to fully wind & Co-Ni-Cr-Fe-others alloy mainspring
  • In-house self winding rotor with cut out Trident and individual serial number engraved onto rotor arm, rhodium finished
  • 48 hour power reserve, protected against overwinding
  • Hour, minute and 1/8 second chronograph, day and date display
  • Pressure rated to 10 ATM with each watch tested to 12 ATM and the outer case deigned and tested for a collapse pressure of 30 ATM
  • Long term climate tested in the arctic, tropics & deserts 
  • In-house 4 layer dial designed for low-light and harsh-light visibility, electrically continuous with outer case 
  • In-house hands with C1 Super Luminova solid wafers in hour and minute hand and C3 hour markers on dial
  • No luminous markings on subdial or second hands to ensure clear night time legibility of hour and minute hands
  • All dimensions, layouts and colour shades based on numerical ratios from the Fibonacci sequence
  • Leather strap with profiled natural rubber core and inner anti-sweat lining
  • Fixed departure angle of strap from case to provide maximum comfort and stability on slim as well as thicker wrists
  • 316L stainless steel butterfly-hinge strap clasp with engraved Trident logo
  • 316L stainless steel bracelet with Trident logo deep engraved into butterfly clasp. Adjustable links secured with 316H double headed screw bolts
  • Both the bracelet & strap are included with each watch
  • Leather presentation and travel case suitable for up to 2 watches
  • 2 year Warranty & a Lifetime Guarantee
  • Standard build is with a Tachymeter bezel case, with the Roman Numeral bezel case available as a no cost option
Calibre 775M2 movement (7750-Modified)
The heart of the Field Engineer is built from a Valjoux 7750 chronograph movement, finished to a custom specification in Switzerland and then modified in London.  The 775M2 designation shows the movement is built from the 7750 base structure but with major modifications.  M2 refers to the second modification set used in the Field Engineer which incorporates enhanced shock protection over M1.

775M2 is an integrated 25 jewel unit with shock absorbing on all main bearings.  In its standard 7750 form it is a supremely solid and accurate timepiece that has had over 40 years of gentle fettling by ETA to achieve an incredible level of reliability. M2 doesn't change any of the drive chain and timing architecture or internal shock absorbing, instead replacing the day/date mechanism to offset display into a 00 arrangement that sits below the 3 0-clock line, improving overall shock resistance and modifying a few other small things.  Standard shock absorbing is enhanced by the internal movement holder, vertical movement compression system, outer case design and mechanical isolation of the movement from the case. A triple sealed floating crown is used in preference to a screw down crown specifically for this purpose.  The dial layering, chapter ring and casing also provide electrical continuity to enhance Faraday cage magnetic shielding. 

All Field Engineer styling and visual design is based on Fibonacci sequence numbers and ratios.  The Fibonacci sequence is the simplest of number patterns; 1, 1, 2, 3, 5, 8, 13, 21, 34... and features in many natural forms, as well as art and architecture since classical Greece.  It was first analysed and understood during the 12th Century European Renaissance, at the same time that numbering switched from Roman to Arabic, the Indian concept of a zero was introduced, and paper began to displace parchment; three small and obscure changes that suddenly made everything possible. The closed form solution of the Fibonacci sequence is a ratio of 1 to 0.618, often called the golden ratio due to its perfectly balanced visual proportions.  The Field Engineer uses some obvious sections of the number sequence, but more subtly relies on the ratios within the sequence for all its visual design.


The serial number of each chronograph is engraved into the self winding rotor visible through the sapphire crystal back. 








Warranty & Guarantee

Within the limitations of mechanical watches, there isn't much in day-to-day life that will destroy a Field Engineer. If you break a crown, button, sapphire crystal, damage the movement or do anything else from any reasonable level of accident (dropping onto a tiled floor for instance) over the first 2 years of ownership then just send it back and it will be repaired or replaced. The warranty extends to the strap, clasp and bracelet. You can swim or shower with the leather strap, but please be careful with high DEET mosquito repellents as they can dissolve the materials and leave a black stain on your wrist.  The Warranty is very easy going as I haven't found anything yet that isn't a perfectly reasonable way of breaking a watch.

If you manage to break an OFFSHORE Professional Field Engineer through something not covered by the Warranty, like running over it with a car, then I will replace it at half the price of a new one. This is a (my) lifetime guarantee regardless of any abuse, lack of servicing or number of owners. Failure analysis is a important part of engineering and from a dent or damage, I can back calculate the impact energy and physical deceleration that caused it, and hence the energy levels that were absorbed or transmitted through each of the shock absorbing layers. The design deceleration limit before timing and movement exceeds tolerance is 1000G laterally and 600G axially, so if you do accidentally drop it try and do so sideways, and not onto the crown if possible. M2 enhancement to the movement is a direct result of excellent customer feedback from a couple of very solid drops and knocks.

Built for individuals