In pictures: South African innovators

Over 200 of South Africa's greatest inventions, from the world-renowned CAT scanner to guitars made from oil cans, have gone on display at the MTN ScienCentre in Cape Town.

Pictured here, the swimming pool vacuum cleaner was invented by hydraulics engineer Ferdinand Chauvier.

The Kreepy Krauly, as it is known, uses water pressure to suck leaves and dirt particles from the water.

Invented in 1974, the machine is still used in pools worldwide.