Model Builder can print your projects in Z, N, HO, S, O, OO, Standard Scale, G, One Inch
Military Models Scales: 1:32, 1:35, 1:72, 28mm, 32mm.
Miniature scales 1:144, 1:120, 1:48, 1:12
Any scale between 1:10 and 1:480
From the opening screen:
Once you choose a scale and enter the program
Everything you drop on the screen will automatically default to your chosen scale.
In this example, we have a 6.5 foot tall door that is 3 feet wide in HO scale.