Leave that to my dad, he is one those who build the real thing, he was then a crew-member of the sheerlegs crane "Taklift" (i am not sure if it was the 1 or the 4, i guess it was the 4, i will ask him when i see him this weekend) which placed the main parts of the wheel before it was raised into the vertical position. Maybe i will have a go at it. BTW: it was the third time he sailed under tower-bridge, and this time it was very close and narrow to get to that point in London.

Robert van der Veeke Basugasubasubasu Basugasubakuhaku Gasubakuhakuhaku!! "Better is the enemy of good enough." Dr. Mikoyan of the Mikoyan Gurevich Design Bureau.