Hello and what have I here?

Hi folks! I am new to the forum and have been deep in the search function trying to get as much info as I can but struggling a bit. I have lots of Air Ministry spares and am getting to grips with the codes but would love to know if there are now released parts manuals for aircraft such as the Meteor, Vampire and Hunter as my Granddad flew them all in his RAF days and it would be great to know if I have parts that were used on those types. I also have a massive fascination with the Canberra and Victor if anyone knows where I can get technical info on them?

I also just found the item pictured below. Any ideas what it is from?

[ATTACH=CONFIG]247750[/ATTACH]

I will continue to search here and google as I am sure folks are already tired of people asking without trying to find the info themselves first but if anyone can nudge me in the right direction that would be massively appreciated.

Ash