[Petr Brezina]

Would be anyone so kind and measure for me basic dimensions of the protective cage for the No.9 aerial, please?
I know there are many replicas but not sure about theirs authenticity either in design neither in sizes.
I believe there are again some differencies between the manufacturers, possibly also between Brit/Can types.
I like this one - made from D shaped rod, hopefuly UK made.
Thanks a lot!