====== AP 2003 ======
Calibre **2003** is an ultra-thin [[hand-wound]] watch movement from [[Audemars Piguet]].

This was the thinnest watch movement made from [[1946]].

===== Info =====
Cal. 2003 was introduced in [[1946]] or [[1953]] as the thinnest watch movement available. It achieved this goal by passing the [[Piguet 21]], introduced in [[1925]], by .1 mm The F. Piguet movement was 1.75 mm and this Cal. 2003 was 1.64 mm. Both measured 9 [[ligne]] in diameter, making them extremely small as well. Cal. 2003 was designed in cooperation with [[Jaeger-LeCoultre|LeCoultre]] and [[Vacheron Constantin]].

The movement was based on the [[Audemars Piguet 9ML]] but with many modifications, specifically to the bridges. Audemars Piguet had exclusivity for two years before Vacheron Constantin introduced their own version, their Cal. 1003. Jaeger-LeCoultre never used the calibre themselves, but they did produce it as Cal. 803 for others to use.

The movement is extremely simple, with [[manual winding]], 18,000 A/h beat rate, and 17 or 18 jewels. The thin profile makes it ideal for [[module]]s, and this is how it is typically employed.

===== Ebauches =====
  * [[Vacheron Constantin 1003]]
  * [[JLC 803]]

===== See also =====
  * [[Piguet 21]], which had the record before


<WRAP ud ud_mov>

**Manufacturer:**
  * [[Audemars Piguet]]

**Description:**
  * [[Hand-wound]] ultra-thin movement

**Functions:**
  * Hour/minute hands

**Data:**
  * 18,000 A/h
  * 9 ligne (20.8 mm) wide, 1.64 mm high
  * 17 or 18 jewels

**Production period:**
  * [[1946]]-present
</WRAP>

{{tag>Movements Ultra-thin_movements Audemars_Piguet_calibres}}