> 3) Why not make a CLEAN break from this (apparent) chicanery and
> provide honest measurements for the active screen: [eg. 35 cm]?
Everyone would have to do it, or the government would have to force it
(sorry, Jim). For computer screens in the U.S., I believe sellers are
required (or a strong "voluntary" agreement was reached) to also
provide the viewable measure.
In television sets this happened many years ago. Manufacturers used to
quote the tube size until the Federal Trade Commission (I believe)
issued regulations requiring TVs to be advertised with their viewable
dimension.
This is why we see on TV boxes here markings like:
27" Color Television (28" in Canada)
It's not that the TV is bigger in Canada. It's that Canada still
allows them to use the tube size so they do.