Metric versus Imperial System for Diving?

[Storker]

tonight is of concern to some foreigners, yes, that does seem a bit strange. Or if I order a quarter pounder at Burger King.

Marketing tip for metric penetrance; I suspect one reason people are accepting of plastic soda bottle measures in metric is because a liter is a little more than a quart

That's just because you're not only stubbornly insisting to continue using obsolete units, you even got some of them wrong when you initially took them across the Atlantic.

Some years ago I bought a bottle of Laphroaig at Heathrow. Imagine my delight when I discovered it contained 1.14L of whisky.

*Crocodile Dundee voice*
Now THAT'S a quart!





---------- Post added October 30th, 2014 at 07:18 AM ----------

After you finish beating this topic to a bloody pulp can you start a couple more about how we should standardize the money system in the world to the US dollar (most popular world currency)

... in the 3rd world.

For national trade in the developed world, we have our own currencies, and for international trade the Euro is quite popular, not the least because it's been a harder currency than the USD for quite a few years.

The USD still has its use for trading petroleum, though, you still see those prices quoted in USD. I don't know whether that is from tradition or because you guys are still burning an inordinate amount of it.

--
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Typos are a feature, not a bug

 

[dfx]

I suspect it could be objectively quantified if someone really wanted to fund such an effort.

It's really not that hard. One system has features that the other one hasn't. One system has problems that the other one hasn't. That's all you need to look at. Dozens of examples have been given and not a single counterexample has been given (because none exist). There's even whole websites dedicated to the subject. It doesn't even matter which way you look at it, SI always comes out as either equal (if you only look at the most trivial use cases) or superior, which means that overall it's superior.

But hey, keep denying it. The more you do, the funnier it will be when the US finally adopts metric

 

[redacted]

But hey, keep denying it. The more you do, the funnier it will be when the US finally adopts metric

I'm sure I will not see any major inroads in my lifetime. And I suspect my great grandson will buy his gasoline by the gallon and deal with speed limits in miles per hour. In the mean time you go ahead and enjoy a good bottle of beer in your government mandated 341 mL bottle. Funny, that just happens to be 12 oz. So, is that what it means to go metric?

 

[dfx]

I'm sure I will not see any major inroads in my lifetime. And I suspect my great grandson will buy his gasoline by the gallon and deal with speed limits in miles per hour. In the mean time you go ahead and enjoy a good bottle of beer in your government mandated 341 mL bottle. Funny, that just happens to be 12 oz. So, is that what it means to go metric?

I drink beer from 500 mL cans, but thanks for your concern.

 

[dmoore19]

Hmmm,

Seems like there is not much of a real Standard for the quantity of beer in cans. Wonder why that is? It would seem in a civilized world there would be some sort of standard.

Beverage can - Wikipedia, the free encyclopedia

 

[KenGordon]

Oh please. They pay taxes in America, they were all founded by Americans, not a single one of them sure as hell didn't start up in a garage in Oslo.

http://appleinsider.com/articles/14...ders-one-time-tax-break-for-repatriating-cash

 

[Kevrumbo]

More useful info for diving in Metric Units (btw, there have been no useful "tidbits" of info at all for the cumbersome non-intuitive US Imperial Units)

The motivation is for the traveling diver to destinations & dive-ops overseas -especially critical for the advanced or technical diver, where you will frequently have Asian or European teammates. . . and again once you commit to metric, it's way easier & intuitive to work with. Some easy conversion tips to help "wean" y'all off eventually:


Easy Imperial US/Metric Conversions for depth & pressure, that you can do in your head:


Depth in Meters multiplied by 10/3 gives Depth in Feet;
Feet multiplied by 3/10 gives Meters.
Example: 18m(10/3) = 60' ; 60'(3/10) = 18m


Pressure Bar multiplied by 3/2, and multiplied again by 10 gives Pressure PSI;
Pressure PSI multiplied by 2/3, and divided by 10 gives Pressure Bar.
Ex): 200bar(3/2)(10) = 3000psi ; 3000psi(2/3)/10 = 200bar.


___
Your common counting numbers, or Reference Cardinal Numbers for depth on most Dive Tables are:


Imperial US (feet) by 10's:
Ex): 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110 etc


Metric System goes by 3's:
Ex): 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33 etc


Using these counting sequences, you can easily use the 3/10 or 10/3 conversion factors. . .

 

[PfcAJ]

More useful info for diving in Metric Units (btw, there have been no useful "tidbits" of info at all for the cumbersome non-intuitive US Imperial Units)

The motivation is for the traveling diver to destinations & dive-ops overseas -especially critical for the advanced or technical diver, where you will frequently have Asian or European teammates. . . and again once you commit to metric, it's way easier & intuitive to work with. Some easy conversion tips to help "wean" y'all off eventually:


Easy Imperial US/Metric Conversions for depth & pressure, that you can do in your head:


Depth in Meters multiplied by 10/3 gives Depth in Feet;
Feet multiplied by 3/10 gives Meters.
Example: 18m(10/3) = 60' ; 60'(3/10) = 18m


Pressure Bar multiplied by 3/2, and multiplied again by 10 gives Pressure PSI;
Pressure PSI multiplied by 2/3, and divided by 10 gives Pressure Bar.
Ex): 200bar(3/2)(10) = 3000psi ; 3000psi(2/3)/10 = 200bar.


___
Your common counting numbers, or Reference Cardinal Numbers for depth on most Dive Tables are:


Imperial US (feet) by 10's:
Ex): 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110 etc


Metric System goes by 3's:
Ex): 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33 etc


Using these counting sequences, you can easily use the 3/10 or 10/3 conversion factors. . .

Why do metric tables go by 3s and not 5s?

5, 10, 15, 20, etc

 

[mrdre]

Why do metric tables go by 3s and not 5s?

5, 10, 15, 20, etc

Seems like no apparent reason except the need to match imperial system.

 

[PfcAJ]

Seems like no apparent reason except the need to match imperial system.

Indeed. And counting by threes isn't very "intuitive ".