SMLE volley sight bead dimensions

[Claven2]

I need to make a repro sight bead for an SMLE volley sight and I don't have an original here to measure.

Would someone with calipers here, who owns a long lee or SMLE with an intact sigh bead, be able to take some measurements for me?

I've made a drawing of the dimensions I need.



A=
B=
C=
D=
E=
F=
G=

Thanks to anyone who can help

I suspect F and G are the same diameter (pls confirm?)

I don't need the tenon length, as I have to make it a little long anyhow so I can rivet it over and file flat.