Autonomous diving, free of links with surface effectively became so when three technical innovations summed: fins (De Corlieu patent of 1933), single-lens mask so, coplanar vision (Monogoggle Kramarenko patent of 1935), automatic regulator with free mouthpiece (CG45 of Cousteau-Gagnan of 1946).

"Historic equipment" is defined as to be dated from autonomous diving origin until 1980. "Vintage equipment" must have at least 25 years of age. 1980 is taken as a fixed reference year, because if represents the limit period between spontaneous/artisan and industrialized diving, above all between self-manned diving and the spread of diving centers, between the old-school training agencies and those of American origin.
   This website hosts only historic and vintage equipment, news, information, limiting the vintage area to the most interested or special products.

MUSEUM – In the Museum menu, by clicking in a category a page opens with the pictures in small format of all products in this category with a small description, ranged by brand. By clicking in a product, you access to its technical sheet with large format pictures annexed.

TECHNIQUE - In Technique there are Catalogues and Logos, Special collections, Manuals-covers, Equipment dating, Workshop, Patents. Technical sheets have a separate menu.

TECHNICAL SHEETS - Here you find technical sheets and pictures of all equipment presented in this website.

HISTORY – The History menu contains the new People section, then Historic companies, Texts and Images of diving history, Historic advertising

LET’S TALK OF - The Let’s talk of ... menu offers high level technical-historical articles, current events and tradition articles, tales. Collaboration is open to everybody; you can use the Contact form to propose your article.

OUR COLLECTIONS – This space is available to anyone wishing to virtually share his own collection, irrelevant if important or not, if large or small as long as it shows historic or vintage items.

It includes Curiosities & Oddities and Articoles from Magazines and Newspapers  

In Rarities rare or extremely rare items are signaled for each equipment category; these are those items which, by their own, can make special any collection.

This is the menu to refer to check new items presented in this website during each current month and, of course, in all previous months.

CONTRIBUTIONS – Everyone may contribute to enrich this website with his knowledge and equipment, following my invitation in the Home presentation page.

Mas is the Diving activity Museum – Italian acronym of Museo delle Attività Subacquee of Hds Italy, presented and illustrated in these pages.