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Metric or imperial measurements?

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Metric or imperial.
Metric.
84%
 84%  [ 44 ]
Imperial.
15%
 15%  [ 8 ]
Total Votes : 52

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and
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PostPosted: 19:18 - 13 Aug 2008    Post subject: Metric or imperial measurements? Reply with quote

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Last edited by and on 00:53 - 24 Mar 2010; edited 1 time in total
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Kickstart
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PostPosted: 19:33 - 13 Aug 2008    Post subject: Reply with quote

Hi

Personally if going for 1 system I would go for metric. However at school we were taught both, and I tend to use them fairly interchangeably. Might describe something fairly small as 10mm to half an inch thick.

All the best

Keith
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5v3d3b0
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PostPosted: 19:41 - 13 Aug 2008    Post subject: Reply with quote

Well the metric system is linked to SI units, so is therefore more handy..
And I just find it more logical
1 km = 1000 metres, 1 mile = 1760 yards, or 5280 feet. Not as easy when you want to calculate 15 miles off the top of your head...
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Skudd
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PostPosted: 19:56 - 13 Aug 2008    Post subject: Reply with quote

I use both when doing any diy job. both are interchangeable.
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NSR Mick
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PostPosted: 20:01 - 13 Aug 2008    Post subject: Reply with quote

I use whichever fit's best at the time.

Britain will never be fully metric as it would cost too much money and time to change all the road signs.
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owdamer
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PostPosted: 20:03 - 13 Aug 2008    Post subject: Reply with quote

I did metric at school and was told no one needed to use imperial anymore, then when I left school I started work at British Aerospace and had to relearn inperial as all the aircraft parts were built to imperial drawings. A few years further down the line I started work on Airbus parts and these were metric so I had to change back to what I was taught at school, except my machine was imperial so i had to keeps converting. Next I moved onto boeing parts and these were imperial again. Never knew where I was up to there!.
Now I fix dvdr's and no one measures sod all so it doesn't matter.
I buy my petrol by the litre but want to know my mpg..... Confused
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and
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PostPosted: 20:14 - 13 Aug 2008    Post subject: Reply with quote

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NSR Mick
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PostPosted: 20:19 - 13 Aug 2008    Post subject: Reply with quote

ulthar wrote:
gsxrmick wrote:
I use whichever fit's best at the time.

Britain will never be fully metric as it would cost too much money and time to change all the road signs.


This is not true.


It's also down to education. can you imagine what would happen on a 50mph limit road that suddenly has signs displaying 80.
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Itchy
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PostPosted: 20:21 - 13 Aug 2008    Post subject: Reply with quote

gsxrmick wrote:
I use whichever fit's best at the time.

Britain will never be fully metric as it would cost too much money and time to change all the road signs.


says you! , around Bolton , 2nd week of March before the year ends all the road signs get changed ...

takes the p1ss , completely , they change a road sign for one which is identical which is about half a metre away...

The next year they do the same with a brand new sign and its moved back to the original spot...

A speed camera has been moved also in such a manner , gotta spend all the budget or you don't get more next year!.
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Kickstart
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PostPosted: 20:22 - 13 Aug 2008    Post subject: Reply with quote

ulthar wrote:
I don't understand why British Aerospace would continue using Imperial measurements as all of BAEs customers use metric and would make working with other nations, particularly NATO members including the USA who use metric for ease, unnecessarily difficult as well as driving up costs. Maybe that was one of the reasons for the cost increases for the Typhoon.


USA largely uses imperial.

Problem is that in aerospace they are building parts for designs that were originally specced ages ago. And get it wrong and use the wrong part and the results can be pretty disasterous.

From memory that was one of the problems with this accident:-

https://en.wikipedia.org/wiki/British_Airways_Flight_5390

All the best

Keith
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Ste
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PostPosted: 20:26 - 13 Aug 2008    Post subject: Reply with quote

If choosing one it'd be metric, but it's not hard to understand both hence both should be taught.
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and
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PostPosted: 20:31 - 13 Aug 2008    Post subject: Reply with quote

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NSR Mick
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PostPosted: 20:33 - 13 Aug 2008    Post subject: Reply with quote

Could be worse we could still be dealing with Witworth. Laughing
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Kickstart
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PostPosted: 20:39 - 13 Aug 2008    Post subject: Reply with quote

ulthar wrote:
There are so many new designs of aircraft which use totally new components does not really justify retaining Imperial.


But there are so many old ones still being made (let alone in use and hence generating parts income, the main source of income for aircraft companies) that they have a hell of a market for imperial stuff

ulthar wrote:
One for domestic using Imperial and export using Metric. The conversion process taking up time and money. It makes sense since all of the USAs customers use Metric (apart from the UK).


Suspect that virtually no companies (beyond tool / fastener makers) would have ranges of otherwise similar products, one imperial and one metric.

All the best

Keith
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and
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PostPosted: 20:58 - 13 Aug 2008    Post subject: Reply with quote

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5v3d3b0
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PostPosted: 21:06 - 13 Aug 2008    Post subject: Reply with quote

The reasonthe brits still have imperial is the same reason they still have pounds rather than euros: They're conservative
You still have your policemen with hats that make them look like tarts etc etc etc...im not into it at all...
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NSR Mick
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PostPosted: 21:10 - 13 Aug 2008    Post subject: Reply with quote

Surely an aircraft part is an aircraft part.

Much like bike parts. If I need a pinch bolt for the fork legs on my bike I couldnt give a flying whether it's imperial or metric, I just get the dealer to pull the part no. up and they supply me with the correct item.

The only time I ever measure anything is if I'm doing diy or one off bike work. DIY is usually done in inches, bike work work cm and mm.
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and
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PostPosted: 21:32 - 13 Aug 2008    Post subject: Reply with quote

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Last edited by and on 00:54 - 24 Mar 2010; edited 1 time in total
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Kickstart
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PostPosted: 21:38 - 13 Aug 2008    Post subject: Reply with quote

ulthar wrote:
You could just say that but for one model of aircraft, there can be several different variants for each operator and there can be some variation in components. So, it would be vital to have everything to exact specifications.


Yep, so changing randomly from metric to imperial massively increases the chances of a disasterous mistake, while not really saving much at all. Possible cost is massive compared to the minor financial benefit.

All the best

Keith
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.Chris.
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PostPosted: 22:13 - 13 Aug 2008    Post subject: Reply with quote

Depends on what it is to be honest, but for most day-to-day things it's Imperial for me. I have no idea how much I weigh in kg, how tall I am in metres, how many kj I'm supposed to eat in a day, how much petrol my bike/car consumes in l/100km, etc.

On the issue of legislation, I think both should be legal for the various measurements. I can see very little reason why it would impede international trade if we continue to allow selling potatoes in lb/oz.

In the past metrication has also been used as a good cloak for price hikes - things going from 1/4lb to 100g while the price stays the same. I bet if they banned the sale of beer in pints most pubs would charge the same for 500ml as they currently do for a pint.

Edit: You link to the metric association website. These sort of people really make me dig my heels in. Example - they seem to think that one of the reasons we should change our road signs to metric is that it would be easier for drivers from the continent to understand. Well, I don't care if they don't understand it really - just as I'm sure they don't care that I don't understand their signs in km.
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Lone-Wolf
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PostPosted: 22:33 - 13 Aug 2008    Post subject: Reply with quote

gsxrmick wrote:
Could be worse we could still be dealing with Witworth. Laughing


Wotcha.

There's a reason for using Whitworth threads - do you know what it is ?



A coarse thread will hold better in a soft material - say an aluminium crankcase.
A fine thread will give much more "holding power" - say on the stud holding down a cylinder barrel.
This is why British bikes had studs as opposed to bolts. The coarse end of the stud went into the crankcase - the fine end stuck out and held the barrel down.

Whitworth threads, and the like, were designed by engineers - the metric range of threads were designed by mathematicians - the pitch is normally easily divisible by the diameter.

Metric is far easier - Imperial was designed to do the job.
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Didge
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PostPosted: 23:04 - 13 Aug 2008    Post subject: Reply with quote

My Buell is imperial & metric. Wink
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stinkwheel
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PostPosted: 01:28 - 14 Aug 2008    Post subject: Reply with quote

What Lone-Wolf says is true of the UNF thread system more than Whitworth. Still imperial.

Personally. I use metric to measure, imperial to estimate.

I can visualise a height of 5' 11". I can't visualise 180cm.
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ZRX61
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PostPosted: 04:53 - 14 Aug 2008    Post subject: Re: Metric or imperial measurements? Reply with quote

ulthar wrote:
- all the roads in Britain are designed in metric units.
]
I never realised the UK didn't have any roads before the 1970's.... Rolling Eyes
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SpicyBlimp
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PostPosted: 05:06 - 14 Aug 2008    Post subject: Reply with quote

ulthar wrote:
Millions of pounds are wasted every year due to repairing bridges damaged by drivers who only know metric and the signs being in imperial.


I am pretty certain a 'foreign' lorry driver can tell that a bridge is not 14 meters tall Laughing
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