Greiner Vibrograf WPL 610 Mode D'emploi page 7

Left = release air
Middle Middle = watch stays on top
Right = dipping
1. Turn the lever to the right:
The watch dives into the water.
The pressure in the cylinder.
decreases and the leak becomes
visible (Air bubbles). visible (Air-bubbles).
2. Turn lever to the middle: 2 Turn lever to the middle:
The watch comes out of the water.
3. Turn lever to the left:
The pressure releases The pressure releases
from the cylinder.
watch stays on top