====== IWC Ingenieur 866 ======
  *See Also [[IWC Ingenieur]]

The [[IWC]] **Ingenieur** (Ref. 866A/AD and similar 9120A/AD, 1808, and 1908) was a rugged and [[anti-magnetic]] [[engineer]] watch produced from [[1967]] through [[1976]].

===== Overview =====
Both [[Rolex]] and IWC saw the need for a [[engineer|watch for engineers and scientists]] in the 1950s, combining rugged [[automatic]] movements, [[water-resistant]] cases, and [[anti-magnetic]] concepts in the [[Rolex Milgauss]] and this IWC Ingenieur. The concept has remained for over 50 years, with the [[IWC Ingenieur|IWC Ingenieur family]] spawning many models, including an iconic redesign by famed designer [[Genta, Gerald|Gerald Genta]], a pivot to [[motor racing]], and the use of exotic materials like [[titanium]] and [[ceramic]].

The second-generation Ingenieur, Ref. 866A and 866AD (with [[date window|date]]), appeared in [[1967]], updating [[IWC Ingenieur 666|the original Ref. 666 Ingenieur]] with a slightly larger, more water-resistant case as well as a new movement, [[IWC 854|Cal. 854/8541]]. The styling was also updated, with new [[sword hands]] and double-bar index markers with [[lume]]. The bezel was more sculpted and the lugs tapered to give a modern feel, and the caseback now had 14 sides rather than six indentations. The new case was 37 mm in diameter but remained relatively thick at 13.2 mm thanks to the [[soft iron]] inner case for magnetic resistance. All models have the "INGENIEUR" logo above the index at 6 00.

Once again, the Ingenieur was available with a steel or [[gold filled]] case, now as Ref. 866 and with or without [[date window]] with the suffix "AD" or "A", respectively. A 14 karat [[yellow gold]] model with steel caseback was Ref. 9120, and these generally came with a gold bracelet. The gold models were only water resistant to 6 ATM, however. A variety of dials were offered, including anthracite or sunburst in silver, gold, black, or blue.

In [[1970]], IWC introduced a new reference numbering scheme which followed the movement rather than the case. Thus, Ref. 866A became Ref. 1908 and Ref 866AD became Ref. 1808. The old models remained available, with solid gold versions retaining their old reference numbers through [[1976]].

The Ingenieur was "rebooted" in [[1976]] to become the [[IWC Ingenieur SL 1832|Ref. 1832 Ingenieur SL]] with all existing references removed from the catalog at this time, though it is likely that some sales continued for years.

===== External Links =====
  * [[http://www.moeb.ch/Ingenieur/02e_ref866.html|1967-1976: The second Ingenieur generation]]


<WRAP ud ud_mod>

**Reference:**
  * 866A/1908 [[Stainless steel]] or [[gold filled]]
  * 866AD/1808 [[Stainless steel]] or [[gold filled]] with [[date window]]
  * 1920A [[Yellow gold]] case with steel caseback
  * 1920AD [[Yellow gold]] case with steel caseback with [[date window]]

**Movement:**
  * [[Self-winding]] [[manufacture]] movement [[IWC 854|Cal. 854/8541]], 19,800 A/h
  * Integrated shock absorber system
  * [[Pellaton winding system]]
  * 21 [[jewels]]

**Case: **
  * [[Stainless steel]] or [[yellow gold]]
  * [[Tripartite]] case with [[screwed]] caseback
  * Ø 37.0 mm, H 13.2 mm
  * Soft-iron inner case for [[magnetic field protection]] up to 80,000 A/m
  * [[Plexiglass crystal]]
  * [[Water resistant]] to 6 or 12 ATM

**Dial:**
  * Anthracite or sunburst dial
  * Sword hands with lume
  * Single or double bar markers

**Functions:**
  * Hours, minutes, [[central seconds]] 
  * [[Date window]] at 3 00 ("AD" references only)

**Bracelet: **
  * Leather strap or metal bracelet

**Production: **
  * Produced [[1967]]-[[1976]]
  * Predecessor [[IWC Ingenieur 666|Ref. 666 Ingenieur]]
  * Successor [[IWC Ingenieur SL 1832|Ref. 1832 Ingenieur SL]]
</WRAP>

{{tag>Watch_models IWC_Ingenieur_models}}