====== Lange L952 ======

**L952** is a movement by [[A. Lange & Söhne]].

[[Hand-winding]] [[manufacture movement]] with [[flyback]] [[chronograph]] function, [[perpetual calendar]] with [[moon phase]] indication, [[big date]] and precisely [[jumping]] minute counter.

===== L952.1 =====
{{wst>image_cr|Lange|L952.1}}
{{wst>image_cr|Lange|L952.1 ZB|L952.1 Dial side}}

The caliber **Lange L952.1** is used in the model [[A. Lange & Söhne Datograph Perpetual|Datograph Perpetual]].

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**Description:**
  * [[Hand-winding]] movement
  * [[Flyback]] [[chronograph]]
  * [[Perpetual calendar]]
  * [[Column-wheel]] mechanism
  * Shock-resistant [[Glucydur]] [[balance]]
  * [[Swan's neck fine regulation]]
  * [[Plate]]s and [[bridge]]s in untreated [[Nickel silver]], [[perlaged]] and decorated with Glashütte ribbing 
  * All edges [[chamfered]] and polished

**Functions:**
  * Hours, minutes
  * [[Small seconds]] with [[hacking seconds]]
  * [[Flyback]] [[chronograph]]
  * [[Perpetual calendar]] with day of week, month, leap year, [[day-/night indication]], [[moon phase]] indication and [[big date]]

**Data:**
  * Ø 32 mm, height 8 mm
  * 45 [[jewels]], including 4 in screwed gold [[chaton]]s
  * 18,000 A/h
  * 556 components
  * Power reserve 36 h

**Production:**
  * From ?
</WRAP>

===== L952.2 =====
{{wst>image_cr|Lange|L952.2}}

The caliber **Lange L952.2** features a [[tourbillon]] with patented [[stop-second]] and is used in the model [[A. Lange & Söhne Datograph Perpetual Tourbillon|Datograph Perpetual Tourbillon]]. 

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**Description:**
  * [[Tourbillon]]
  * Precision adjustment: shock-resistant [[cam-poised balance]]
  * Intermediary wheel cock and tourbillon bar engraved by hand 

**Functions:**
  * [[Small seconds]] via tourbillon, patented [[hacking seconds]]
  * [[Day/night indicator]]
  * [[Power reserve indicator]] at 9/10 h

**Data:**
  * Ø 32.6 mm; height: 9 mm
  * 59 [[jewels]], including 5 in screwed gold [[chaton]]s
  * 2 diamond capstones
  * 18,000 A/h
  * 729 components
  * Power reserve 50 hours
</WRAP>


===== L952.4 =====
The **Lange L952.4** caliber is used in the [[A. Lange & Söhne Datograph Perpetual Tourbillon|Datograph Perpetual Tourbillon Honeygold "Lumen"]]. 

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**Data:**
  * 57 [[jewels]], 5 of which are mounted in screwed gold [[chatons]]
  * 1 diamond cap jewel
  * 684 components
</WRAP>


{{tag>Movements Manual_winding_movements Chronograph_movements Perpetual_calendar_movements Tourbillon_movements A._Lange_&_Söhne_calibres}}