Hi whense & welcome,
I was interested in this feature mentioned by @RicardoParis but it took me a little time to work out where this specific feature was located, to change the scale on an STL when importing, even after reading the referenced Simscale doc, but maybe that’s just me
Here is a screenshot of where I found the ‘Import List’ described and referred to by Ricardo. It becomes available when starting the import…Click on the green highlighted area to access the scale.
I read your question, brilliant. I see that a solution has already been provided & it’s down to you as it is so much quicker & easier to assist with possible solution/s when the issue is well laid out and explained, great posting to the forum