The VC-10 certainly does have a periscope for checking the tailplane and engines. Biggest mistake I ever made was having a look at the tailplane while we were plugged in to another 10 taking on gas. The way the tail was moving was v scary.
The first RAF VC10 flew on 26 Nov 65 and was handed over to the RAF on 7 Jul 66, so I doubt you periscope is from a ten, as there is no way the RAF supply system could have had something early <img src="tongue.gif" border="0"> . As I remember the ten periscope is about 2'6" and weighs about 10lb ish.
Tonks <img src="smile.gif" border="0">
[ 18 February 2002: Message edited by: Tonkenna ]</p>