A5 Paper Question? Whats The Real Size?

[Earthdawn]

Ok so I want to have a leather notebook cover made and it seems the A5 size will be best for me.

 

It is listed online as being 14.8cm by 21cm for A5 size

 

Here is the problem. I took some Tomoe River paper and folder it in half thinking that was the true A4 size. Thats the cream color in the middle. it is 14.8cm x 21cm

Now my Clairefontaine notebook is still a little wider, the blue. and is 16.5cm x 21cm

The Banditapple Carnet Handy Notebook, on top in green is a little less wide. It is listed as 11cm x 21cm

 

So .... are the Banditapple and Clairefontaine just not real A5 size? And if not why would they make them just a little off size?

 

Take it easy on me if this is a silly question. i am not a paper expert at all, obviously. I am just trying to figure out the best dimentions to have my leather notebook cover made in.

 

THANK you in advance to all the paper pros

 

http://i880.photobucket.com/albums/ac10/thevaporcafe/9B41D5FA-0578-4D73-9132-1D2B66E7EBC2-2396-0000008B10074383_zpsbe599eb8.jpg

[Shuggy]

A5 is defined by the International Standards Organisation as 148 x 210mm. The others are a non-standard size.

[The Good Captain]

A5 is defined by the International Standards Organisation as 148 x 210mm. The others are a non-standard size.

Spot-on, there, old chap.

[Ed01]

I know that some companies make their notebooks to be slightly larger than standard in size if the pages are designed to be removed. The torn out page will end up being the standard in size.

[TMLee]

A5 is defined by the International Standards Organisation as 148 x 210mm. The others are a non-standard size.

 

 

+1

 

A4 = 297mm x 210mm

[Shuggy]

And did you ever wonder why ISO standard paper are those sizes? ISO standard paper exploits a neat mathematical property in they are made with an aspect ratio of 1 to Root 2.

 

This means that if you cut or fold them in half along the long edge, the piece of paper that you end up with is not only half the area, but maintains exactly the same aspect ratio of 1 to Root 2. Neat eh?

[The Good Captain]

And did you ever wonder why ISO standard paper are those sizes? ISO standard paper exploits a neat mathematical property in they are made with an aspect ratio of 1 to Root 2.

 

This means that if you cut or fold them in half along the long edge, the piece of paper that you end up with is not only half the area, but maintains exactly the same aspect ratio of 1 to Root 2. Neat eh?

There were (and possibly still are) a range of the Rotring Rapidograph drawing pens that were specifically designed for the A-series of papers etc. Basically, a line of a particular width used on an A3 sheet would be half the width when the drawing/plan or whatever was reduced by half, ie made A4 size. Etc etc etc. Therefore, the user could add work to the reduced piece, with the correct pen. The ordinary range of pens couldn't be guaranteed to have the same properties.

Isn't it odd; the amount of useless information one's mind retains for so many years? I last used one of those in about 1975.

 

 

[Plume145]

And did you ever wonder why ISO standard paper are those sizes? ISO standard paper exploits a neat mathematical property in they are made with an aspect ratio of 1 to Root 2.

 

This means that if you cut or fold them in half along the long edge, the piece of paper that you end up with is not only half the area, but maintains exactly the same aspect ratio of 1 to Root 2. Neat eh?

There were (and possibly still are) a range of the Rotring Rapidograph drawing pens that were specifically designed for the A-series of papers etc. Basically, a line of a particular width used on an A3 sheet would be half the width when the drawing/plan or whatever was reduced by half, ie made A4 size. Etc etc etc. Therefore, the user could add work to the reduced piece, with the correct pen. The ordinary range of pens couldn't be guaranteed to have the same properties.

Isn't it odd; the amount of useless information one's mind retains for so many years? I last used one of those in about 1975.

that is pretty cool actually

 

And yeah, it's an endless source of fascination to me the kinds of weird stuff that we retain - in my case I used to remember the exact model name of the portable CD walkman my middle-school best friend's mom had in their spare room, for years after I'd last seen it (and I never went to buy parts for it or anything like that that would require knowing the model number lol). I no longer remember the model name, but I STILL remember the CD walkman itself in pretty vivid detail.

 

weird, huh? I can't remember her older brother's name, but I can remember the freaking CD walkman (to be fair though, I seem to remember visuals much more than stuff I was hearing. I remember the brother's face pretty well).

[JohnS-MI]

Ok so I want to have a leather notebook cover made and it seems the A5 size will be best for me.

 

It is listed online as being 14.8cm by 21cm for A5 size

 

Here is the problem. I took some Tomoe River paper and folder it in half thinking that was the true A4 size. Thats the cream color in the middle. it is 14.8cm x 21cm

Now my Clairefontaine notebook is still a little wider, the blue. and is 16.5cm x 21cm

The Banditapple Carnet Handy Notebook, on top in green is a little less wide. It is listed as 11cm x 21cm

 

So .... are the Banditapple and Clairefontaine just not real A5 size? And if not why would they make them just a little off size?

 

Take it easy on me if this is a silly question. i am not a paper expert at all, obviously. I am just trying to figure out the best dimentions to have my leather notebook cover made in.

 

THANK you in advance to all the paper pros

 

http://i880.photobucket.com/albums/ac10/thevaporcafe/9B41D5FA-0578-4D73-9132-1D2B66E7EBC2-2396-0000008B10074383_zpsbe599eb8.jpg

 

The Banditapple is sub-A5. The paper dimension for A5 is 148 x 210 mm, but that probably isn't the notebook size. The paper dimension in the notebook may be correct, or overwidth (if sidebound), or overheight (if topbound) so the torn-out sheet is A5. In addition, the cover and binding will add to the dimensions. The paper in my Black&Red A5 is dimensionally correct, but narrow (133 mm) when torn at the perf. Over the covers and binding wire (which a leather cover must accomodate), it is 162 x 215 mm.

 

You should look at finished notebook dimensions for the notebooks you would be likely to use and size for the largest. (But check first that the actual paper in the notebook is either A5 or will be after it is torn out).

[chiaroscuro]

I've found that many companies use ISO sizes in a very general way (which kind of defeats the purpose). Even when websites list actual dimensions in metric or imperial, they're often approximate without being labelled as such.

 

For example, the Tsubame W100S and Apica 6A10 are often sold as a B5 size (250x176mm). They're both marked "179x252mm" on the back. It seems like every website that uses imperial lists a slightly different size. In reality, the 6A10 is indeed 179x252mm, while the Tsubame is 179x247.5mm: neither are true B5 and one isn't even the size it says on it.

 

Not a huge disparity by any means in either case, but when it comes to custom covers, 2mm can be the difference between fitting and not fitting. Hence, I wouldn't pay much attention to what size the retailer or manufacturer states and I'd try to get a confirmation of the size down to the last millimeter before ordering a custom cover.

[JohnS-MI]

I've found that many companies use ISO sizes in a very general way (which kind of defeats the purpose). Even when websites list actual dimensions in metric or imperial, they're often approximate without being labelled as such.

 

For example, the Tsubame W100S and Apica 6A10 are often sold as a B5 size (250x176mm). They're both marked "179x252mm" on the back. It seems like every website that uses imperial lists a slightly different size. In reality, the 6A10 is indeed 179x252mm, while the Tsubame is 179x247.5mm: neither are true B5 and one isn't even the size it says on it.

 

Not a huge disparity by any means in either case, but when it comes to custom covers, 2mm can be the difference between fitting and not fitting. Hence, I wouldn't pay much attention to what size the retailer or manufacturer states and I'd try to get a confirmation of the size down to the last millimeter before ordering a custom cover.

 

Japanese B-series is different than ISO B-series. Apica is Japanese, and I would expect JB5, 182 x 257 mm; they are actually a little small.

[blackcat99]

the Clairefontaine books are definately not A5 - I have just placed an order for a custom made leather cover for my Clairefontaine books, from a guy on etsy

[Earthdawn]

the Clairefontaine books are definately not A5 - I have just placed an order for a custom made leather cover for my Clairefontaine books, from a guy on etsy

 

It wouldnt be CHris Davis would it?

 

I have been trying to contact him for a few days now with no luck ... I am hoping to get a custom sized cover.