I had a bit of a visit to the Canberra war memorial the other day. I saw this thing and thought..."Where have I seen that before?"
After a bit of research at home, I found out it was a world war British Rifle Grenade used to construct Obi Wan Kenobi's original lightsaber.
http://www.partsofsw.com/bensab.htm
Yes my telescope is still broken.....
Baz.