Nasds

[wimo]

I just came across a NASDS Scuba Time Calculator and have no clue on how to use it, anybody have a manual or know how to use it?

 

[AfterDark]

I just came across a NASDS Scuba Time Calculator and have no clue on how to use it, anybody have a manual or know how to use it?

I have one but no manual. It's pretty self evident. I'll try to explain it. The outer ring mine is black is your psi of gas, also bottom time is shown in the oval window at the bottom of the black ring. You align the increment line of the psi in your tank with the increment line of your depth shown on top of the white ring. The movable red line is used to line up the psi and depth increments. Knowing your SAC rate you align the increment line of your SAC rate shown at the bottom of the white ring to the closest time increment line seen in the oval window. That time is your bottom time with that psi at that depth. In theory anyway. Probably gives you a ball park time. I haven't used mine as I just got it also. I probably won't be using mine for another couple of months. If you use yours let us know how you make out.
Hope that helps.

 

[wimo]

Thanks for the info. I will take a look and see how it works