====== IWC Ingenieur SL 1832 ======
  *See Also [[IWC Ingenieur]]

{{wst>image_cr|IWC|Ingenieur SL|IWC Ingenieur SL}}

The **Ingenieur SL** (Called "Jumbo" and officially Ref. 1832 and 9232) was a major redesign to the [[IWC]] [[IWC Ingenieur|Ingenieur]] family in [[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 Ingenieur had become somewhat stale by the mid 1970s but famed designer [[Genta, Gerald|Gerald Genta]] had shown a stylistic path forward with his groundbreaking [[Audemars Piguet Royal Oak]] in [[1972]]. Genta designed three "SL" or "Steel Line" watches for IWC, of which only the Ingenieur was presented for sale. The production "Ingenieur SL", introduced in [[1976]]. Like the Royal Oak, [[Patek Philippe Nautilus]], and [[Vacheron Constantin 222]], the new Ingenieur SL had a "sandwich" case, with both the caseback and bezel being removable. But unlike those others, the Ingenieur used a novel approach The Bezel and crystal were screwed in place like a screwed caseback using five "bores" spaced around the circular bezel. This resembles the Royal Oak's screws but is significantly different technically.

The new case was much larger than previous watches, with an integrated bracelet and [[tonneau]] shape. Measuring 40 mm by 38 mm around a 30 mm dial, the "Jumbo" nickname seemed appropriate for the time. Some even called it "Fat" thanks to the 14 mm depth of the case.

The [[lume]]d [[sword hand]]s remained, but the dial was updated with simpler [[bar]] markers on the hours and tiny bars on the minutes between. The dial gained a checkerboard [[guilloché]] pattern said to resemble graph paper. All models feature a [[date window]] at 3 00 and the "INGENIEUR" logo above 6 00 gained the initials "SL".

The Ingenieur SL was available with both [[automatic]] and [[quartz]] movements but attracted few buyers. Just 978 examples of the model were sold between [[1976]] and [[1984]], never attracting the attention of the Royal Oak. This included 598 automatic models (532 Ref. 1832 and 55 Ref. 9232) and 380 quartz models (335 Ref. 3003 and 45 Ref. 9503). A thinner [[IWC Ingenieur SL 3303|Ingenieur SL, Ref. 3303]] was introduced in [[1980]] as a replacement, though the remaining Jumbo models languished in shops for a few more years.

The Ingenieur SL was again available with a steel or [[gold filled]] case as Ref. 1832 (automatic) or Ref. 3003 (quartz). A 18 karat [[yellow gold]] model with steel caseback was Ref. 9232 (automatic) or Ref. 9503 (quartz). All models came with a matching bracelet. The steel models were water resistant to 12 ATM while the gold models were only good to 6 ATM. Some examples were converted to quartz or automatic during production or after sale.

A [[IWC Ingenieur SL 3303|"Skinny" Quartz Ingenieur SL, Ref. 3303]] was introduced in [[1980]] to replace the quartz Ref. 3003. The Ref. 1832 Ingenieur SL Automatic remained on sale through [[1985]] but was not truly replaced until the [[2005]] introduction of the 42.5 mm [[IWC Ingenieur Automatic 3227|Ref. 3227]]. Buyers looking for an automatic Ingenieur in the 1980s were instead steered to the 34 mm [[IWC Ingenieur 3505|"Skinny" Ref. 3505 Ingenieur SL Automatic]] and its successors, which appeared alongside the "Jumbo" in [[1983]].

===== External Links =====
  * [[http://www.moeb.ch/Ingenieur/03e_Jumbo.html|1976-1984: The «Jumbo» Ingenieur SL]]


<WRAP ud ud_mod>

**Reference:**
  * 1832 [[Automatic]], [[stainless steel]] or [[gold filled]] with matching bracelet (543 produced)
  * 9232 [[Automatic]], [[yellow gold]] with gold bracelet (55 produced)
  * 3003 [[Quartz]], [[stainless steel]] or [[gold filled]] with matching bracelet (335 produced)
  * 9503 [[Quartz]], [[yellow gold]] with gold bracelet (45 produced)

**Movement:**
  * [[Self-winding]] [[manufacture]] movement [[IWC 854|Cal. 8541ES]], 19,800 A/h or [[Quartz]] [[IWC 2405|Cal. 2405]]

**Case: **
  * [[Stainless steel]] or [[yellow gold]]
  * Ø 40.0 mm, H 12.5 mm
  * Soft-iron inner case for [[magnetic field protection]] up to 80,000 A/m
  * [[Sapphire crystal]]
  * Screw-in bezel and caseback
  * [[Waterproof]] to 6 or 12 ATM

**Dial:**
  * Black, white, or champagne dial
  * Bar markers

**Functions:**
  * Hours, minutes, [[central seconds]] 
  * [[Date window]] at 3 00

**Bracelet: **
  * Metal bracelet system with deployant clasp

**Production: **
  * Produced [[1976]]-[[1984]]
  * Predecessor [[IWC Ingenieur 866|Ref. 1808/1908 Ingenieur]]
  * Successor [[IWC Ingenieur SL 3303|Ref. 3303 "Skinny" Quartz Ingenieur SL]] or [[IWC Ingenieur 3505|Ref. 3505 "Skinny" Automatic Ingenieur SL]]
</WRAP>

{{tag>Watch_models Quartz_watches IWC_Ingenieur_models}}