Svens tip of scalescenes.com has this
scalescenes.com Ship in OO & N gauge (1/76 & <1/160)
Which gives you an idea of size.
If you find another scale & can print by DPI, you can adjust the scale.
About DPI & printing: -
Change DPI
Print size
You would need to calculate the scale adjustment & set dpi accordingly, so it is more work!