80/20 wrote:
> On 3 Aug, 22:46, jg <j...@[EMAIL PROTECTED]
> wrote:
>> 80/20 wrote:
>>> I have a plan that was plotted at 1:100 on A3 paper - this was then
>>> reduced down to A4 paper.
>>> What conversion factor to I use to calculate the sizes?
>> A3 is 420x297, A4 is 210x297. Too lazy to work out whether width or
>> height reduces by more, but because the printer will probably reduce by
>> more than paper size because of margins anyway, why not just measure
>> between 2 points on each dwg and calculate the pro****tion?
>
> Thanks for quick reply, can't measure dwg on A3 as I have only been
> sent A4 photo copy.
> As the dwg is landscape, I'm assuming papersizes are A3 420 wide x 297
> high and A4 is 297 wide x 210 high giving factor of 0.71 wide and and
> high.
>
Ah you're right. I remember now that's one of the preset reductions on
some photocopiers. So it's inverse 0.71 = 1.41... 1:141 yuk. You could
draw a scale - another braintwister (for me at least). Sometimes the
simplest things....
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