SHED,
loving your work!
As you most kindly suggested, I have just checked out the 'Climatedepot.com' website, and sadly, "excellent" is not the adjective I would use to describe it.
In aviation, one of the most accurate pieces of equipment in general use is 'The Mk.1 Eyeball'.
Surely a better plan would be to move Apron Control to the existing ATC VCR when ATC move to the new tower.
Sorry, I forgot, the new tower has been shelved while MAG spent £50m on developing T1 into a rival to Dumplington market, (AKA The Trafford Centre).
Now there's a SHEDload of CO2 for you!