Spitfire Gunsight adjustment?

[SEE]

I adjust the top gunsight ring for my preferred guns convergence at 200yds but not sure of the function/purpose of the lower ring as it seems to do exactly the same as the top ring regards placement of the cross hairs with respect to the edge of the gunsight ring. The upper ring is calibrated in Yards and the lower ring in feet but covers a much smaller distance - I am curious as to its function/purpose and cannot find any info?

[JG53Frankyboy]

Put in the estimated wingspan of your target to get the correct distance...

[BlackbusheFlyer]

For example 32 ft for a Me109.

[SEE]

Excellent, many thanks!

[335th_GRAthos]

Wow!

Can someone post some more explanations (and pictures) guys?


This sounds like really interesting stuff!

~S~

[Flashman]

I have been playing about with this but I dont think it works properly. What I do is this:

1) Set the sight to the guns convergence (remember its in yards, there are 110 yards in 100 metres)

2) Set the lower ring in feet for the wingspan, eg 32 ft for 109, 66 feet for JU88 (cheers wiki!).

Now this adjusts the size of the cross. It is my understanding that when the enemy aircraft wingtips are toughing the cross hairs inner edge, it is the required distance (i.e. the top ring) from you, i.e. in convergence.

However in testing with the icons (showing distance in KM) I find that the sight picture looks incorrect. I must stress I might be doing this wrong!

Anyway I will take some screenshots and post them so you can see what im doing.