cleansocks wrote:
WatchFred wrote:
not "thickness", actually

display caseback and pushers would easily pass a 10ATM/100m certification, the issue is "only" the rotating bezel/crystal w/ the slide rule, so it would need to be 5-7mm wider in diameter (or lose functionality), not thicker.
Considering the way a separate crown actuates the inner bezel of the iwc aquatimer, I would have imagined you guys could have connected the entire navitimer's rotating bezel in a similar way so it works like the crown on the aquatimer to rotate the inner sliderule. I guess it's impossible?
absolutely "possible", just useless as a sliderule calculator. these inner rotating setting bezels appeared much earlier with "Compressor" cases manufactured by EPSA Piquerez, used by Universal Geneve, JLC, Vulcain, Longines, Enicar - and later IWC.