On 03/19/2017 06:40 PM, James Wilkinson Sword wrote:

[snip]

With a spirit level?

Then the picture looks squint as your eye matches the top of it with the
ceiling.


The best solution to that problem would be to not worry about it. If you
can't, how about putting the pictures lower so you don't often notice
both a picture and the ceiling? You gut used to the picture not looking
perfect, and any guest who complains is being rude.

It would be possible to paint the top few inches of the wall a different
color, making the line (between colors) parallel to the floor. Hang all
pictures below that.

--
Mark Lloyd
http://notstupid.us/

"All our knowledge begins with the senses, proceeds then to the
understanding, and ends with reason. There is nothing higher than
reason." -- Immanuel Kant