Quote:
Originally Posted by TramFan
I enlarge a lot on my printing of models from A4 sheet size to A3 sheet size. this is an increase of approx 50%, if the original model was, say 1:76 scale on the A4, how do you calculate the scale for the model printed on A3, an increase of approx 50%.
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As Berry mentioned, any A format is larger than the preceding one by the square root of 2, or approximately 1.4142: A3 is 1.4142x (and 1.4142 - 1 = 41.42%) larger than A4, and A2 is 2x (1.4142 x 1.4142 = 2; 2 - 1 = 100%) larger than A4*
Quote:
Originally Posted by TramFan
If you just decrease the original scale by 50% from 1:76 to 1:38 it is then a decrease of 100% in the scale?????
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The number after the "1:" is a
divisor, therefore if it gets smaller, the scale is
increased, not
decreased
*the enlargement applies to each linear dimension, therefore a two-dimensional A2 sheet covers either
two (not 1.4142) A3s or
four (not two) A4s