In 1882 the Carmagnolle brothers of Marseilles, France, patented the first properly anthropomorphic design of ADS featuring rolling convolute joints consisting of partial sections of concentric spheres formed to create a close fit and kept watertight with a waterproof cloth. The suit had 22 of these joints: four in each leg, six per arm, and two in the body of the suit. The helmet possessed 25 individual 2-inch (50 mm) glass viewing ports spaced at the average distance of the human eyes. Weighing 830 pounds (380 kg), the Carmagnole ADS never worked properly and its joints never were entirely waterproof. It is now on display at the French National Navy Museum in Paris.
