The message
from "nightjar" nightjar@insert my surname here.uk.com contains
these words:

My solution to running telephone, data and an air line between two
buildings a couple of metres apart was a piece of 100mm square 6mm wall
steel tube 3m above ground.

Don't you thing 1/4" thick walls was a bit OTT? To span a couple of
meters a bit of plastic drain pipe would have been fine.

--
Skipweasel
Pay no attention to that man behind the curtain.