A friend of mine finally decided to get his SCUBA cert and just finished up his OW classes at the same dive shop I used to get certified. He tells me (I haven't seen it yet) that they got a calculator with their class materials to calculate pressure groups from depth and bottom time. Then you type in the surface interval and it gives you the resulting pressure group, then you can add another dive, etc.
There were some questions in the quizzes that he could not answer using the calculator so he went online and printed out a copy of the PADI dive table and learned how to use it to answer the questions (for example, if you're in pressure group G after a dive to xyz depth how long was your bottom time?) that couldn't be done with the calculator.
So, what is this gizmo? I'm going to ask him to bring it into work so I can take a look at it. Seems silly to me.
There were some questions in the quizzes that he could not answer using the calculator so he went online and printed out a copy of the PADI dive table and learned how to use it to answer the questions (for example, if you're in pressure group G after a dive to xyz depth how long was your bottom time?) that couldn't be done with the calculator.
So, what is this gizmo? I'm going to ask him to bring it into work so I can take a look at it. Seems silly to me.