Alberto gianni, Italy - A black and white photo of two people on a boat
Summary
The "torretta butoscopica" (exploration turret), designed, built, assembled and tested by the Italian diver Alberto Gianni (right). Scanned from the book Viaggi nel mondo sommerso (Travel in the underwater world) by Ulderico Tegani, Mondadori, 1931.
Tags
Date
1931
Source
Wikimedia Commons
Copyright info
Public Domain