Dessicator

This was in a crate of items that came from the closure of the Concorde test programme from BAC/BAE. There is no Concorde Pat Number and no certificate. It’s possible this was associated with the test equipment used on the propotypes rather than being used as a part on the actual aircraft. This is one for somebody who knows more about it or wants to do the reearch! As usual, any ideas please post in the comments.