I’ve gotten myself thoroughly confused by scaling in Inkscape. I’ve read multiple posts, and I think I am OK when I create my own design from scratch, or even from Fusion360 or Festi boxes. But I am still having problems recognizing when someone else’s SVG is going to print correctly.
For example, the files at gift card holder and Art Deco Luggage Tags both show up in Inkscape as too small, even though both have 96dpi set. For the gift card, the hole for the chicago screw shows up at 3.8mm, when it should be ~5mm. 5/3.8 is really close to 96/72. For the luggage tag, the height is 33mm, when I think is should be credit card sized at 54mm. Here, there is no obvious ratio I’m off by. Both of these files do have art boards set to 1440x864, so it may mean that it will work in GFUI; but my question is focused on knowing in Inkscape if the design is correct/accurate.
On the other hand, the files at Easy Kerf Gauges come in exactly correct. 4.0mm circles read as 4.0mm circles. These files also have 96dpi.
So, my question is how can I tell if an SVG is being displayed accurately in Inkscape?
(I have set the option to not include the width of the line in the measurements, so that is not confusing things).