====== A&S 1615 ======
{{wst>image_r|A&S 1615|Calibre A&S 1615\\ © [[Arnold & Son]]}}

**A&S 1615** ist ein calibre by [[Arnold & Son]].

[[Skeletonized]] [[manufacture movement]]. Manual winding, 27 [[jewels]], [[power reserve]] over 90 hours, double [[barrel]], 21,600 vibrations/h, two [[power reserve]] indications.

One barrel transfers energy to the second one when needed. Essentially, as the first barrel winds the second one, the power reserve indicator of the first barrel goes down, while the second one goes up -- making for an accurate and intriguing readout. The two [[mainspring]] barrels supply the hand-wound calibre with an amazing 90 hours of power reserve, and provide a more [[constant force]] to the [[wheel train]].

The [[gear train]] runs vertically in a linear format connecting the two barrels at six o'clock to the [[balance wheel]] at twelve o'clock, and endowing the movement with its pyramid structure. The bridges are designed so that all of the wheels, the two mainspring barrels, the [[escapement]] and [[balance wheel]] are all magnificently visible from the dial side.

The calibre is used with the [[Arnold & Son Time Pyramid Guilloché]].


<WRAP ud ud_mov>

**Description:**
  * [[Manual winding]] movement
  * [[Double barrel]]

**Functions:**
  * Hours, minutes, seconds
  * Two [[power reserve indicator]]s

**Extras:**
  * Movement in [[Nickel silver]], [[rhodinated]]
  * [[Haute Horlogerie]] finishing manually [[chamfered]] bridges with polished edges, [[satin-finished]] [[mainplate]], [[Geneva stripes]], circular [[satin-finished]] wheels, [[blued]] screws.

**Data:**
  * Ø 37.6 mm, H 4.4 mm
  * 27 [[jewels]]
  * 21,600 A/h
  * [[Power reserve]] 90 h

**Production period:**
  * Since [[2015]]
</WRAP>

{{tag>Movements Manual_winding_movements Arnold_&_Son_calibres}}