Does everyone really need an SPG? (w/transmitter)

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I know many drivers who could not drive a car with clutch. Why there are three pedals on the floor of the driver's side!!!!!

I am more than happy with spg. Period.
I could not careless about AI. No problem with anyone using one but just do not tell me it is better etc etc.
 
You haven’t lived until you hand cranked the model T.
 
You aren't one of these guys that still want to drive manual transmission and talk down automatic cars?
Actually, yes. Once, in Dominica, the vehicle rental operator met me at the tiny airport with an automatic transmission SUV instead of the manual transmission I'd specified. "Americans cannot drive clutch" he said. I had to insist, and he first made me drive around the airport with a manual transmission vehicle while he sat in the passenger seat. Another time, in Grenada, the rental people mournfully told me that they only had standard transmission cars available. I just smiled. Both my current vehicles are standard transmission. I like driving, not just steering. Nothing wrong with automatics, though, unless you are driving off-road or on bad roads.
 
If you've installed an air pressure transmitter that shows you remaining pressure on your dive computer, do you really need the hose SPG?

Sure, if the transmitter or computer malfunctioned, you needn't end the dive because the spg is there.

But to retain the spg in the unlikely event of a malfunctioning transmitter and be able to continue that dive?

You'd bring and store your spg and of the transmitter malfunctions, it takes a movie with a wrench between dives to connect.

Or are there other reasons to have the spg?

I've added a backup SPG (Cressi Digi 2) to my Suunto D5. It all depends on your comfort level with technology and failure rates.
 
Yo
The answer for me is no. Although I have an air integrated console (Suunto Cobra), a transmitter attached to my Mikron reg would take the same, and only, HP port - so I can't attach a SPG. Have been without a backup for quite some time. For those wondering, the AquaLung Mikron today comes with 2 HP ports and 4 LP ports - I got mine in 2010 - it only has 1HP and 4 LP ports.

You can add an HP port splitter to solve that issue :)
 
I have a J valve. I don't need any spg.
I was certified in Southern California in 1970, and dived for two years with just a J valve, watch, and capillary depth gauge. I added a SPG in 1972 and dived with my J valve down. I much preferred knowing how much gas I had in my steel 72, modern technology :)
 
I've added a backup SPG (Cressi Digi 2) to my Suunto D5. It all depends on your comfort level with technology and failure rates.
If you have a Suunto then a backup SPG is an excellent idea.
 
I was certified in Southern California in 1970, and dived for two years with just a J valve, watch, and capillary depth gauge. I added a SPG in 1972 and dived with my J valve down. I much preferred knowing how much gas I had in my steel 72, modern technology :)
Same in New England. Except we removed the J-valve pull-rods on the bottom to use as lobster tickle sticks, then reinstalled them before surfacing. Tricky with a three-finger mitt.
 

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