Dimensions (tag)
From SnapMap
dimensions=<width>x<height><unit> records the dimensions of a physical image. For photographs taken by digital cameras, it has no meaning and should not be used.
Units should be one of 'mm', 'cm' or 'm'.
Don't be fancy: use x, not ×.
Example
title=An Old Peasant caresses a Kitchen Maid in a Stable type=painting artist=David Teniers the Younger thumbnail=http://nationalgallery.org.uk/upload/img_100/N-0862-00-000023-WZ.jpg src=http://nationalgallery.org.uk/upload/img/teniers-old-peasant-caresses-kitchen-maid-stable-NG862-fm.jpg date=c1650 dimensions=43.2x64.9cm catalog_id=NG862 archive=National Gallery, London
