Bushman, I asked the wife to measure mine whle I was doing a little touch-up on the mast. Here's what she came up with (VP2+ purchased last week):
Top diameter 6 3/4"
Top outer circumference 21 1/2"
Top outer circumference just below the "lip" 22"
Note there is a slight change in dimension around the top edge.
Bottom diameter 8"
Bottom circumference 25 3/8
We won't know how accurate these figures are until you or I use them for something, so go for it.
And Ray Proudfoot: There can't be two of you, can there? Of Radar Contact beta team? Bob Fiegel here. Long since have given up Flight Sim, but those sure were enjoyable times, even the grunt stuff of beta!