1. ## Re: What are quadrant compression calculation on dive watch Dial?

Originally Posted by HK Shooter
And this is what I got back from Zodiac
Very cool HK, but I'm not so sure about Zodiac's answer..."based on your oxygen level"? I doubt very seriously the numbers relate to PPO2.

Anyway, I haven't cracked it yet. The best I can figure is that the larger numbers(52, 37, 27, 18) are figures for a specific botom time. The smaller numbers(2,6,7,2) are decompression times for the afore mentioned bottom times. What I can't figure out, are at what depth do these figures apply. Also, I'm wondering if the placement of the numbers on the dial are really relevant, or are they just convenient places to place them.

I'm not giving up though. If we keep at it, I know we can figure it out.

2. ## Re: What are quadrant compression calculation on dive watch Dial?

Still nothing from that master diver...'deepcdvr ' ???

I even looked at that page he posted a while back where the new Navy Dive manual was posted, and still nothing in all those PDFs on the site. Talk about A LOT of info. Whew, I'm dizzy...

3. ## Re: What are quadrant compression calculation on dive watch Dial?

I'm a USN-trained diver and chamber operator. I have most of the equivalent civilian certifications also. I've never been able to make sense of these numbers.

I also emailed Zodiac a few years ago, got an answer back saying "we're checking around" and nothing after that

This question comes up periodically on the watch forums and I've never seen an answer that makes any sense. It remains a complete mystery to me

4. ## Re: What are quadrant compression calculation on dive watch Dial?

The sequence 52, 37, 27, 18 could be the no stop times for 60, 70, 80, and 90 feet on somebody's tables (or even 70, 80, 90 and 100 feet), but none of the several that I own. The other numbers and positioning on the dial leave me clueless. do those numbers fit anywhere on the tables pictured above?

Let it suffice that I will be using something else to plan my next dive.

5. ## Re: What are quadrant compression calculation on dive watch Dial?

The sequence 52, 37, 27, 18 could be the no stop times for 60, 70, 80, and 90 feet on somebody's tables (or even 70, 80, 90 and 100 feet), but none of the several that I own. The other numbers and positioning on the dial leave me clueless. do those numbers fit anywhere on the tables pictured above?

Let it suffice that I will be using something else to plan my next dive.
I think we should all tell Zodiac to get rid of this stupid idea.

Look at all the experienced divers not having a clue on how to use these numbers. I said it befor, but in order for a diver to find this usefull he should know what it is right away!

Is anyone behind the wheel at Zodiac? they asked all the departments and still couldnt come up with a decent answer,,,,,,,,its their watch!!

6. ## Re: What are quadrant compression calculation on dive watch Dial?

Originally Posted by HalifaxNS
I think we should all tell Zodiac to get rid of this stupid idea.

Look at all the experienced divers not having a clue on how to use these numbers. I said it befor, but in order for a diver to find this usefull he should know what it is right away!

Is anyone behind the wheel at Zodiac? they asked all the departments and still couldnt come up with a decent answer,,,,,,,,its their watch!!
The only additional info I could find is that the Zodiac SSW came with a "wallet sized set of waterproof dive-tables" I guess we need to find a set to see if it explains the quadrant markings.

Pip pip

7. ## Quadrant compression calculation on dive watch Dial are!!!!

GIRARD-PERREGAUX came through with the user manual for the GP dive watch:

The reference number of the watch is 9108. The movement called Gyromatic (see attachment) GP 42-0 is a calibre 11 ½''' automatic high-frequency, 36,000 vibrations/hour. The watch is dated between 1967 and the early 70's. Nice watch, I saw one on ebay for \$2000 by the way.

Anyway, here is the answer to to how to use the "fractions" on the dial

8. ## Re: Quadrant compression calculation on dive watch Dial are!!!!

Originally Posted by HK Shooter
GIRARD-PERREGAUX came through with the user manual for the GP dive watch:

The reference number of the watch is 9108. The movement called Gyromatic (see attachment) GP 42-0 is a calibre 11 ½''' automatic high-frequency, 36,000 vibrations/hour. The watch is dated between 1967 and the early 70's. Nice watch, I saw one on ebay for \$2000 by the way.

Anyway, here is the answer to to how to use the "fractions" on the dial

Great job

Mystery finally solved. Now go get that Zodiac SSW

9. ## Re: What are quadrant compression calculation on dive watch Dial?

I'll need to re-read this a few times after a couple cups of coffee, and I only do no deco diving... But gawd, I love this forum. Thank you, HK Shooter!

10. ## Re: What are quadrant compression calculation on dive watch Dial?

Originally Posted by suddha
I'll need to re-read this a few times after a couple cups of coffee, and I only do no deco diving... But gawd, I love this forum. Thank you, HK Shooter!
Concidering that I don't even have any of these watches I did spend too much time looking for the answer. But I always love a good mystery .

Now if I only could find one of these actual divers...

Page 3 of 5 First 12345 Last