what you need is CALIPERS.
(if you haven't already got some)
( 100% of Gibbon, Fri 31 Dec 2004, 0:09, archived)

i have some

( Dr. Kitteny Berk, Fri 31 Dec 2004, 0:09, archived)

we had already guessed that :)

( 100% of Gibbon, Fri 31 Dec 2004, 0:20, archived)

And
gynaecological stirrups
( DogHorse wants to do a poo in Paul's bathroom, Fri 31 Dec 2004, 0:13, archived)

www.b3ta.com/board/4107906
( Dr. Kitteny Berk, Fri 31 Dec 2004, 0:13, archived)

he does

( Jinxx, Fri 31 Dec 2004, 0:14, archived)