Units of Measure in Diving?

[Akimbo]

Please let us know what units of measure you use most frequently, not necessarily prefer, in diving — for instrument readings and calculations.

 

[knowone]

Depends on the dive, gear and gauges. Metric for techish decoish type things, because after one comes two then three more easily and requires less fingers..

 

[Rhone Man]

I'm bi-numerical. Except when I am narc'ed.

 

[super7]

All the dive destinations I've visited in Asia was using metric measurement, with Bar for pressure. I haven't seen any SPGs or consoles in MPa yet.

#I was a kid living in Melbourne when Australia turned Metric. I still remember seeing on TV workers making the 100kph speed limit sign at a factory, and was amazed to see the digits hand painted.

 

[vladimir]

As an American abroad I'm ambi-unital; I still have more of a gut-level feel for Imperial units, however. I can multiply or divide by 2.2, 3.3, or 14.7, as needed.

 

[Kern]

Um, pascals & bars are sorta interchangeable. But sure, in the spirit of the thing, & in spite of the fact that Faber steel tanks in Oz are marked in mega Pascals, I answered; Meters, Grams, & Bars outside the US.

 

[String]

Suspect this poll is going to be havily geographical related. Also theres a mix in some places.

Most of the world barring N. America and Carribean use metres. However some places in asia still use PSI.

 

[Akimbo]

Um, pascals & bars are sorta interchangeable. But sure, in the spirit of the thing, & in spite of the fact that Faber steel tanks in Oz are marked in mega Pascals, I answered; Meters, Grams, & Bars outside the US.

For those unfamiliar with SI (Système International d'unités), commonly called the Metric System, here are some conversion factors:

One Standard Atmosphere equals:

SI Units
101,325 Pascals
101.325 KPa or Kilo Pascals or 1000x
0.101325 MPa or Mega Pascals or 1 Million x
1.01325 Bar
10.0627586096078 Meters of Sea Water
Imperial Units
14.695948775 PSI
33.899524252 Feet of Fresh Water at 4° C
33.014299900156 Feet of Seawater based on a density of 64.1 Lbs/Ft³​

 

[Blackwood]

The 4th one

 

[bracko]

Um, pascals & bars are sorta interchangeable. But sure, in the spirit of the thing, & in spite of the fact that Faber steel tanks in Oz are marked in mega Pascals, I answered; Meters, Grams, & Bars outside the US.

it's a requirement under AS 1210 that the tanks are marked in MPa i believe... although it's been a while since I've had to read over the standard.

ummm... why isn't there a SI for inside the US? don't the US armed forces use SI?