Mk 4B or 4E gun sight

Absolutely brilliant help. Thank you all very much.

Can anyone recommend a good source for photos of these types of sight ?

I believe that the 4B was fitted in early marks of the Westland Wyvern and the 4E in the Mk 4. Is that correct ?

This is a MK4B GGS. They are very similar to the later MK4E, and I suspect that most of the “B’s” were converted to “E’s”, as the former are very hard to find now.

The only difference I can see is on the left side of the body, the lever mechanism is different, and there is an additional rotary selector is in the same place on the later “E” model.

The Mark 4B was fitted to the first Vampire mks 1&3, Hornet mks 1&3, and Meteor mks 3&4 to name but a few. Later marks of the same aircraft got the MK4E as an upgrade. Hope this helps.

The best pic i’ve seen which apparently is of a Mk.4E fitted in a Wyvern S.4 is this one in the 4+ book on the type.

Rob

The Mk4E came in several versions. Having long or short spigots. The 4B was very similar in appearance as far as I am aware.

Here are some 4E pictures and photos, NB some including mine did not have the sunscreen fitted:

There is a general aircraft photo and schematic in British Aircraft Armament Vol 2.

I just bought Vol 1 and 2 recently.

Peter, by the early type of Wyvern i’m presuming you mean the TF.1? And yes the S.4 did indeed use a Mk.4E, an 8B/2912 to be more precise.

I’ve always found it difficult to find photos of them especially in situ, so if you do find a source of pics i’d be interested too!

Rob

www.fougamagister.be –> BAF history –> Equipment