Gloster Javelin Gunsight
 

Hello every body
I've just buy an old MK7 GGS gunsight of a gloster Javelin.
It Is complete but in bad state so i'd like to restore it in clean condition.
By the way i'm really not specialised in this kind of material...
IS someone know where i can find (download) the technical manual of this gunsight ?
This will help me to do things right :-)

Big big thanks to all who can help me

Best

Matt