But never the less, take a look at Tinkercad. If there is a way to fix this scale problem, it could be an easy way to built good looking things without beeing a CAD engineer.
Compared to the things I've done before in 3D, my new instruments look much more better now and that's not my skills
I also searched for something similar you could download and not have to be online to use it, but sadly haven't found anything comparable yet.