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Author Topic: m m  (Read 4804 times)

regiment

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m m
« on: January 21, 2011, 04:05:33 pm »
my old mucker is thinking of buying a boat  1065 mm whats that in inches is it 35 inch  ?? from two old  80 odd men whos gray matter is a bit slow
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triumphjon

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Re: m m
« Reply #1 on: January 21, 2011, 04:09:08 pm »
its approximatly a sixteenth shy of 42 inches !
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regiment

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Re: m m
« Reply #2 on: January 21, 2011, 04:11:20 pm »
thanks that was quick
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john s 2

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Re: m m
« Reply #3 on: January 21, 2011, 05:25:01 pm »
A lot of tape measures have feet and inches on one side, metric on the other to convert either way just look across. John.
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regiment

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Re: m m
« Reply #4 on: January 21, 2011, 06:34:47 pm »
thank you john s never thought of that
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gondolier88

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Re: m m
« Reply #5 on: January 21, 2011, 06:35:42 pm »
25.4mm in an inch.

Greg
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RaaArtyGunner

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Re: m m
« Reply #6 on: January 21, 2011, 10:12:00 pm »
Couple of Simple rules of thumb,

1. Work in millimetres and metres only and not centimetres, that way your mistakes are obvious.
Example if the model is to be 600M (Metres) long you know to question the measurement as it is looooong, likewise if it is 600mm (Millimetres) long you know it is about right. In essence roughly 1800 feet versus 2 feet

2. Use multiples of, One inch equals 25 millimetres as a rough guide,
Example 4inches is 100 mm, 12 inches is 300mm (3 times 4 inches), 2 feet is 600mm, 18 inches is 450mm and so on.
going the other way divide millimetres by 25 will give an good approximation.

3. Multiply feet by 3 and add two noughts, example 3 foot model is 900mm, reverse applies divide by 3 and remove last two digits, 1250 is 4 foot model and the 50 mm is about 2 inches so we are looking at approx 4 foot 2inches you can then accurately convert the dimension, if it is in your ballpark size such as, it will fit in the car etc.
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w3bby

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Re: m m
« Reply #7 on: January 22, 2011, 09:51:30 am »
Or... as you are on the internet

http://www.onlineconversion.com/ among others...
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regiment

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Re: m m
« Reply #8 on: January 22, 2011, 11:25:13 am »
thanks to all who replied that is the problem not taught m m etc  in1930 and come 1939 could not do much by candle light down the air raid shelters (no dirty minds please )family program any how thanks
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Bryan Young

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Re: m m
« Reply #9 on: January 22, 2011, 04:57:07 pm »
One of the most useful bits of kit I ever bought was a calculator that with only a simple push of a button converts anything into metric and vice verca. Now that "we" are muddling along with 2 sorts of measurement and with subsequent confusion I'd seriously suggest that for less than £10 a lot of angst can be avoided. BY.
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dodgy geezer

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Re: m m
« Reply #10 on: January 22, 2011, 05:25:14 pm »
Quote from: RaaArtyGunner on January 21, 2011, 10:12:00 pm
Couple of Simple rules of thumb,

1. Work in millimetres and metres only and not centimetres, that way your mistakes are obvious......


I've just been building a shed, with some help from a son who is doing his MechEng finals. We started off working in metric - by the time we were finished he was insisting that we worked in Imperial.

The problem was that mistakes were not obvious in metric. If you have to take several measurements and hold them in your head while walking between the work site and a cutting area, it is very easy to get three-figure millimeter numbers confused - as he did. The big problem for the metric system in this sort of work is the lack of single measures at inch and foot sizes. I suppose you could use the decimeter...

Even I was surprised at how badly metric measurements did in this kind of practical test.....   
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essex2visuvesi

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Re: m m
« Reply #11 on: January 22, 2011, 05:26:51 pm »
Quote from: Bryan Young on January 22, 2011, 04:57:07 pm
One of the most useful bits of kit I ever bought was a calculator that with only a simple push of a button converts anything into metric and vice verca. Now that "we" are muddling along with 2 sorts of measurement and with subsequent confusion I'd seriously suggest that for less than £10 a lot of angst can be avoided. BY.
Many midrange and above Mobile phones have this function hidden away somewhere
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Circlip

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Re: m m
« Reply #12 on: January 22, 2011, 05:43:46 pm »
25.4 Always works  :-))

 Yes, saw your post RaaArty


  Regards  Ian.
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Klunk

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Re: m m
« Reply #13 on: January 22, 2011, 07:35:34 pm »
just to confuse things, I work in the print trade.......where we use mm for europe, inches for the USA, and in the print trade, its own measurement in picas, en and ems  points etc!!!!
cofused, you will be!
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RaaArtyGunner

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Re: m m
« Reply #14 on: January 22, 2011, 08:51:27 pm »
Quote from: dodgy geezer on January 22, 2011, 05:25:14 pm
I've just been building a shed, with some help from a son who is doing his MechEng finals. We started off working in metric - by the time we were finished he was insisting that we worked in Imperial.

The problem was that mistakes were not obvious in metric. If you have to take several measurements and hold them in your head while walking between the work site and a cutting area, it is very easy to get three-figure millimeter numbers confused - as he did. The big problem for the metric system in this sort of work is the lack of single measures at inch and foot sizes. I suppose you could use the decimeter...

Even I was surprised at how badly metric measurements did in this kind of practical test.....   

In Oz, a    l o n g    time ago when the Building industry converted to metric, (real pain because imperial is still used, too many existing imperial buildings,) to simply transition and prevent mistakes the use of centimetres was not adopted. And for the old "imperialists" who would still think and compare "imperially" the rule of thumb was implemented.


Being an "Imperialist" it has kept me in good stead ever since.
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Bryan Young

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Re: m m
« Reply #15 on: January 23, 2011, 05:25:16 pm »
My local DIY shop sells timber in "Metric Feet".......BY
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