Sorry for the delay replying, Life…
Are you using your screen at it’s native resolution? Not doing so can effect the accuracy of viewing things 1:1 as noted in that other thread.
Pleas forgive this next question but as I can't see your screen are you sure you have set the relevant edge of AR's ruler to show mm or cm and not it's default of pixels?
As in that other thread, for me with my laptop screen, 1:1 viewing in AR with a 300ppi canvas needs a zoom level of 43%. And at 43% if I put a real ruler up to the screen, 1cm on AR’s ruler dose match 1cm on the real world ruler.
I would note here though, that if I zoom in or out in AR5, that the ruler dose not always immediately update? I sort of have to nudge it on the canvas after zooming to wake it up. This tardiness in updating is perhaps a new bug I think.
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