It was the French mathematician Jean-Baptiste de La Chapelle (1710–1792) who first called the term scaphandre to refer to a kind of flotation suit made with cork that he invented in 1775. The word scuba comes from the Greek:
"Skáphos", noun, which can be translated as "boat" or as "basket" and of
"Anér, andrós", which is synonymous with "man".
Therefore the term scuba could be translated as basket man or boat man.
This concept came to English as a scuba, which refers to a device formed by a waterproof suit along with an airtight case with different pipes to renew the air and a glass and grid in the area of the eyes, which would allow vision once submerged. The scuba allows you to stay and move underwater.
The equipment is called diving scuba - which combines a helmet, a suit and boots with ballast - connected to the surface by means of a tube. With this type of scuba, the diver is attached to the surface, usually a boat, from which he receives a gas that can breathe through a tube. This type of classic scuba is used in explorations at no more than 66 meters deep.
This type of old diving shoes are the ones we all remember seeing in movies based on Julio Verne's novels, such as in 20,000 leagues of underwater travel, and that remain in the collective imaginary since then.
High (including wooden base) : 11 cm
Scuba diameter: 6,5 cm