How do I print 22mm card model (Wargameing) to 16.5mm?

Question

I am just starting in model railways and as the building and accessories are rather expensive, does anyone know how I would print card models that I have in 22mm scale for wargaming into 16.5 ("OO" gauge) for model railways? I guessing that all I have to do is reduce the size - but at what percentage - hope this makes sence.

Answer 1

In most printer drivers you can set the scale, not just in % but also in mm and inch.
If you can do that too, you can just select to print a 22 cm bar at 16.5 cm, and see how the % notation changes.
Or you can do the change in a drawing program, and print one to one from memory.

I get 75% if I try it in my drawing program, but I do not build scale models myself.

If you can not work it out yourself, print one of the cards at 75% and see if the results are satisfying.