If he cant afford £80 for the book, He is not a sparky
 
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Trouble is you'd never know. Could be something subtle in one of the tables. To my mind this is not a document you shouldn't take a risk with.
The PDF of the blue regs I have is scanned. Obviously there are limits on resolution, but otherwise what you see and read is identical to the hard copy (which I also have).

It also has a hidden layer of text beneath each page image, which only becomes visible when you highlight text by click and drag. This must have been generated by some character recognition software, and for most of the time it is identical to the image text, but there is the occasional incorrect character, extra space, or character that simply isn't recognised, eg. the delta symbol.

When you use the search facility to search for a specific word, it searches the hidden text, so occasionally it fails to find something that it should have, as above, but most of the time it finds what you want. Also, it highlights the image, rather than than displaying the hidden text beneath, so you read it as it should be.

I use the pdf version all the time, it is so, so much better. The hard copy sits in a bag in my van and has probably been used half a dozen times at most.
 
The PDF of the blue regs I have is scanned. Obviously there are limits on resolution, but otherwise what you see and read is identical to the hard copy (which I also have).

It also has a hidden layer of text beneath each page image, which only becomes visible when you highlight text by click and drag. This must have been generated by some character recognition software, and for most of the time it is identical to the image text, but there is the occasional incorrect character, extra space, or character that simply isn't recognised, eg. the delta symbol.

When you use the search facility to search for a specific word, it searches the hidden text, so occasionally it fails to find something that it should have, as above, but most of the time it finds what you want. Also, it highlights the image, rather than than displaying the hidden text beneath, so you read it as it should be.

I use the pdf version all the time, it is so, so much better. The hard copy sits in a bag in my van and has probably been used half a dozen times at most.

That's the problem. It's ok if it is scanned as one image, but if all the text and tables have been OCR processed then that's where issues could occur. And someone could be using that incorrect info for years and would never know.
 
That's the problem. It's ok if it is scanned as one image, but if all the text and tables have been OCR processed then that's where issues could occur. And someone could be using that incorrect info for years and would never know.
The text and tables aren't processed, they are an image. The hidden layer of text is processed, but as above, you don't see that unless you select something by click and drag. I'll try to upload a photo so you can see what I mean.
 
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Here's a table from the pdf. I've highlighted the word 'aluminium', which shows the normally hidden layer of text beneath:

bigbluebook.png
 
The text and tables aren't processed, they are an image. The hidden layer of text is processed, but as above, you don't see that unless you select something by click and drag. I'll try to upload a photo so you can see what I mean.

I know what you mean. But that may not be the case in the OPs version. There have been counterfeit copies with errors in before.
 
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I know what you mean. But that may not be the case in the OPs version. There have been counterfeit copies with errors in before.
I demand that he sends me a copy, so that I proof read ;)
 
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I must admit that when I get the regs book from work, I take mine apart and scan it, then OCR it, so that I can search for text.
It does make things easy for me.
No.... I don't pass it onto anyone.
 
I heard Buzz typed up the pdf version….

Not so keen now, are you!
 

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banny07

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pdf version of the regs
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