iwc Aquatimer Deep Two 3547 Mode D'emploi page 31

Important note before diving 28 | 29
Please read the "Depth gauge of the Aquatimer Deep Two" section on page
28. The watch must always be checked visually before a dive. If there is any
obvious damage, condensation on the glass, water in the case, or other
signs of malfunction, the watch must not be used to keep track of dive time
or depth and should be taken to an IWC service centre for checking.
Function of the depth gauge
When diving, the blue depth indicator (7) shows the current depth, which can
be read off on the dive depth scale (6). The red maximum depth indicator (8)
moves in sync with the depth indicator during the descent. During ascent,
the maximum depth indicator continues to show the maximum depth
achieved while the depth indicator moves back towards zero as depth
decreases.
The maximum depth indicator can be reset by pushing the reset button (13).
To avoid damage, the depth gauge is mechanically disengaged below
depths of approximately 50 metres. Depths beyond this limit are no
longer indicated (14).
Adjusting the depth gauge
The depth gauge can be set to zero to correct fluctuations in atmospheric
pressure by turning the adjustment crown (10). This correction should be
made before every dive. To adjust the watch as precisely as possible, pro-
ceed as follows: