The image is too blurred to say what is there. Diagonal light coloured stripes aranged in a diamond shape? Gas patches were yellow so they would be a solid diamond shape similar in colour to the outer ring on the roundels. I haven't seen anything like them included on on any models or profiles.
You are welcome,But I think Antoni hit the nail.I've found also another info that the AF-105 was tested at Speake base and then sent to Cunclife Oven in order to get some modifications.The other two Lightnings were tested both Boscombe Down and Farnborought.
And as far as these gas indicators are concerned,Antoni is right.These ones had a square shape and were yellow-green in colour.The square had 18 square inches mostly.
I can't thank you enough!! I have been looking for this article for some time now and even SAM did not have it in stock...
I hope that I am not asking for too much, could you forward me the rest of it please??