Horological Meandering

DivingT
1099

• Show profile
• Show other posts

Thanks Ben, but the recent Vulcain Cricket Nauticals...

...posted by ztirual and JOHNACONNOLLY have also cleared up some issues on understanding for me.....

Typical of the time was to only state some no stop times, or some whould show realistic last stop times for various depths (upto about 20 - 30mins or so). I'm thinking typically of some Zodiacs, and the Jenny (Philippe) Carribean varients etc. Very useful depth / time ranges.

When I saw a bunch of Fortis Marine Masters, the Mido etc, I assumed that these were also showing last stop times as well. And although perhaps acceptable-ish for the 10 to 15min deco times, clearly its a very harsh scedule for the longer stops, especially for the 40m stuff.

Then, recently, with seeing the Vulcains, and their break down window, we can see that the deco time is given as a complete time to conduct stops, (splitting into 3, 6 & 9m stops). I hadn't seen these watches before, so after Johns explanation, set about gathering all of the deco stop information (from looking at LOTS of photos of the watch online, with the deco window at the various positions to gather the numbers). And its much more realistic (for 60s/70s tables). Would still be considered a bit aggressivie today, but thats evolution, and these watches are great insights into the early days of scuba.

I have tried to see if there is any other form of code on these Mido style dials to break down the stop times into depth intervals, but I can't see one. I would love to see an original instruction manual / book from one of these Fortis MasterMarniers / Midos, just to see what they said about the deco scale.

Cheers Tony

Site Info.