Steinhart Marine Regulator
@siabdo Thank you very much. My only problem is the strap is huge, even at its tightest it's way to big so I have it a rubber strap now that was extra with my Zodiac Sea Wolf until I can get a nice new leather one for it.
@James3900 try it on a perlon strap or maybe even one sided nato.
@siabdo Thanks for that, I will give them a look at.