After scaling some card kits to be printed out in different scales to suit other models, I thought it might be handy for others to see the conversion ratios needed for reprinting. This information is also helpful for enlarging/reducing scale plans. Hopefully the chart is self-explanatory but if it's unclear, please let me know. I am posting it in pdf and doc format.
Peter K, if this is useful for the main website, please feel free to use it in whichever way best suits.