The Spine conf guratron appears as a single arm fully enclosed by a flexible
protective gaiter. One method of actuation is a series of motorised universal joints built
up in modular fashion to the required length. a second method of actuation utilises
stainless steel ovoids strung together on two sets of tensioned steel cables. Linear
actuators manoeuvre the arm by altering the tensions in opposite cables. The difficult
control co-ordination is made possible only by sophisticated software. Its relatively low
payload is offset by some of its particular advantages.