https://bugs.kde.org/show_bug.cgi?id=502231

--- Comment #2 from Sergio <sergio.calleg...@gmail.com> ---
In the specific case, I don't think the actual tolerance value is very
important.

As said, some scanners may have minor tolerances with respect to some page
formats. In my case, I have an HP standard that claims it can do A4 (21x29.7
cm), when in fact can only do (21x29.693), however it advertises A4.

Hence, skanpage should not pretend "in general" that anything close to A4 is
A4.

Conversely, if A4 is among the supported page sizes, and the user asks for A4,
it should say A4 even if the actual page size returned by the scanner is not
really A4, but only close.

Other tools (e.g., skanlite), don't even make the check. If the user asks for
A4, they say A4. Making the check is in my opinion better (so if things are way
too off the user can be alerted), but the tolerance can be relatively loose
(e.g 1%).

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