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But, is there anything to be gained breathing Nitrox in shallow water vs breathing air at the surface? Or how about just surfacing and then continuing to breath Nitrox after the dive?

So, the instructions seem clear and easy enough, but there must be some detail that I am overlooking here.. Camera is a DC1400 just purchased (old stock, but a great deal). System Info shows V1.05 currently installed. Downloaded ME560PXM.bin file from web site. MD5 sum is...

Yea, I figured that there were adapters available, but it would probably take about as long as getting the 26650 batteries themselves. That's what I ultimately wanted to be using, because of the extra capacity, but since I had the 18650s in hand, I wanted to come up with a quick way to test the...

Thanks.. I have no problem replacing the battery, I was just curious how it would be possible to depth test the computer without risking flooding it if it fails. If all goes well, of course, the computer will be fine, and it's better to find out about the failure before relying on the...

Yes, I realize that the 18650 is 8mm smaller diameter than the 26650 battery, but I didn't have any 26650's on hand and wanted to try the light. Since both are 65mm in length, I created a spacer to fill ~4mm around the battery and presumed that would center the 18650 enough. Apparently, that's...

Yes, I have pulled out the o-rings from both computers I have (mine and my son's), and I do think that the o-ring is 1.2mm CS to the accuracy I can read it, and I read the inside edge of the hatch at 27.46mm, and the ID of the o-rings at 27.17mm for one and 27.53mm for the other, so this is all...

Yes, from e-bay from that link. I have been using an 18650 battery with a spacer (a roll of paper, nothing official) to center the battery. I did discover that if I tighten the head end after loosening the tail, then tighten the tail it is working "reliably". That is, I get a solid constant...

I did pull the o-ring off of my Atom 3.0 computer and measured it as .053" (1.3mm) thickness and 1.064" (27mm) ID and 1.185 (30mm) OD. If this is stretched and still 1.3mm thickness, I don't see how it could have started as 1.2mm. The AS568A-023 size is 1.051" ID and .070" thickness, which...

Well, I took a chance with this, and the light that I received seems to have a problem. It actually does work pretty well, but only when the head-end is just barely threaded onto the body. If I tighten it all the way down (or even half the way down), it won't work. It looks like the spring in...

I have an ATOM 3.0 and although I haven't replaced it yet, I'm pretty sure that the o-ring size is -023. I did measure it at 1.185" OD, 1.064" ID, and .053" thickness, which seems consistent with a slightly stretched -023 o-ring (1.051" ID, .060" thickness). The next size of (-024 is 1.114"...

This measurement will be bigger than the o-ring size, though, since the o-ring is stretched into the slot.. I guess it depends on the type of joint, the yoke to tank o-ring isn't stretched, but hose fittings, etc, are. Oceanic ATOM seals with an o-ring between an inner cylinder and an outer...

The Canon PowerShot D30 is relatively inexpensive, new at about $300, refurbished for about $225. It's rated as waterproof to 82', so slightly deeper is likely OK. Has a flash built in. It was one of the cameras I was looking at for my son before we found a good deal on s SeaLife 1400.

I can certainly imagine that if you present a card that doesn't look like one of the agencies that the dive op recognizes raises an issue about how to tell if the card really is valid. The cards that they see every day all "look recognizable", but suppose that I laminate my own card from some...

To the largest slot, it looks like it will fit about 9" circumference. It does come with an extension that can take it up to 14.5"... The BUD should run the same algorithm, so that runs about $200 if you just want a backup. Doesn't make a very good watch, though.

Old thread, newbie followup questions.. Found a web site: O-Rings - The O-Ring Store, We make getting O-Rings easy! that seems to have a wide selection of o-rings in various materials and sizes. $5 shipping for reasonable sized orders (free for $150..) Now, question is what durometer rating...

So, as an absolute novice who has never experienced down-current (or up-current!), the whole idea is a little bit freaking me out.. If one is dealing with this, and hopefully eventually escapes the current (either it subsides, or swimming across the current, or whatever).. If you find yourself...

Ignoring any potential air quality issues, isn't breathing from the bubble just like breathing from the "bubble" of air in the 2nd stage at the same depth as the water line? So breathing in the bubble is like breathing on scuba at the same depth.. One hour is certainly well beyond the NDL at...

Hi.. I just took note that I had been accessing scubaboard always via http and thought that I would try going at it via SSL. The first thing that I get when trying to access https://www.scubaboard.com is that it is presenting an invalid certificate. The certificate was issued to...