Stand-alone wrist mount SPG for backup???

[SBP Studios]

Aside from a dive watch that indicates your depth suggested above, I think your options for an accurate and reliable redundant depth-measuring device are: (1) a back-up wrist computer (digital), or (2) a depth gauge module (analog, $60, http://www.leisurepro.com/Prod/GNSDG.html) which you can put in a Wrist Boot for Computer ($15, search Scubatoys' website for "Empty Computer Wrist Boot").
Hope this helps.
Dive safely.

Def buy yourself a nice watch with Depth function before blowing $80 on that IMO.

 

[wunat]

Check out UWATEC bottom timer.

 

[spectrum]

I dont see that is does any of that in the details of it.

All that and temperature. Post dive it displays max depth instead of current. 2 different dive modes with several sub modes each.

Be advised that these were discontinued by Timex almost 3 years ago so the batteries are getting long in the tooth. It's probably a good idea to plan to do a battery swap first thing.

Pete

 

[ReefHound]

I dont see that is does any of that in the details of it.

That would be covered under ""Dive Track" and "Dive Chrono Feature". The description is not the best but I have and use the watch, I can assure it does these things and more.

 

[redacted]

It strikes me as excessive redundancy for recreational diving. When your computer fails, it is a good time to end the dive and maybe call it day. If you want to be able to continue that dive, then get another compatable computer.

 

[texdiveguy]

I think having a means of checking your depth and ascent rate if your dive computer goes south on you during the dive is a very good idea!!

The Helix is a good watch for this...I have one that I don't use much anymore...but it works fine...I wear a redundant dive computer.

 

[redacted]

I think having a means of checking your depth and ascent rate if your dive computer goes south on you during the dive is a very good idea!!

The Helix is a good watch for this...I have one that I don't use much anymore...but it works fine...I wear a redundant dive computer.

If you are diving with a buddy, it is right next to you. If you are diving solo, then it may be a bit more challenging and the diver would need to decide if it is manageable or not. I do not rely on a depth guage to manage my ascent rate or my depth at a rest stop (the floaties work for me). If I needed visual clues for depth, the DSMB on a marked line is my fallback plan. No extra gear required.

 

[texdiveguy]

If you are diving with a buddy, it is right next to you. If you are diving solo, then it may be a bit more challenging and the diver would need to decide if it is manageable or not. I do not rely on a depth guage to manage my ascent rate or my depth at a rest stop (the floaties work for me). If I needed visual clues for depth, the DSMB on a marked line is my fallback plan. No extra gear required.

We each prefer our own method,,,,if not having a backup depth gauge works for you that is 'cool'. I don't prescribe to that method myself.

I dive in a 'solo state' whether with a dive buddy or truly on my own,,,,,I am prepared to handle a situation alone if need be....a wise thing in my book. Murpheys Law seems to apply equally to failed computers and gauges as it does in dive lights, 2 for each diver is always better than one.

 

[Lucy's Diver]

My wife and I dive PP2s when I dive with her, which is mostly all my recreational dives (in fact most of our gear is identical to ease maintenance and spare parts issues).
I have a Suunto Stinger I dive with at the same time.
I carry a simple guage in my spare parts kit. It will get swapped in if a PP2 fails, and I'd dive on the Stinger. If it was her gear she'd be stuck until she and the computer she would begin using are clean. If it was my PP2 I swap the guage onto the high pressure port and dive the Stinger for the rest of the vacation.
We tend to dive in pretty remote places so I try to have spare parts and such.

 

[EvaL]

I guess my question is if your computer dies suddenly during a dive, are you looking for a back-up to continue diving, or are you just looking for something to allow you to make a safe ascent?
In my opinion, if your answer is the 1st, then you'd probably need a 2nd computer. If it's just to make a safe ascent, then the depth gauge and watch (or a watch with both functions) should do it.
I own 2 computers as having the back-up computer would allow me to make subsequent dives if one fails. This is particularly useful in remote places where dive comps are hard to get and the dive op doesn't rent them.
Dive safely.