ChuckyBob wrote:Analogue SPG's still fail.
When they do fail it may not be obvious .
When a digital SPG fails its going to be much more obvious.
Still, Im moving to a analogue SPG.
I dont know anything that cant fail....
Every time pre-dive you charge the line,before the dive you check the SPG to see if its at zero then after the charge the line you check it to see how much air you have,its a pretty good way to see it is functioning by registering the pressure in the line, and there is no way of saying that there are more ways that it could fail than a digital system,the digital system is obviously more complicated and there-fore has more ways in which it could fail...hence my comment "K.I.S.S"
And if the Digital system does fail you could also lose depth measurement,deco timing,gas measurment,and compass....depending on model (The example I am using is the COBRA 2 Air integrated.)
Now in a failure situation I would much rather have individual items to fail .....not all of them at once...