How to convert one model scale to another
Resize plans and parts from one existing model scale to another.
Target size = Source size × Source scale ÷ Target scale
How it works
A 100 mm part at 1:72 becomes 150 mm at 1:48.
Checked example
Moving from 1:72 to 1:48 enlarges a model; the reverse reduces it.
Workshop notes
Use the actual 1:N ratio when a hobby scale name varies by region.