Helium weight in relation to dive deapth and time. It is complicated. edit... OK you did not bite. Here it is: The watch is older than the US patent though.
Nomos on custom Nubuck Alligator shoes from Peter watchacc Sent from Galaxy S6 Edge via Tapacrap Sent from Galaxy S6 Edge via Tapacrap
Welcome and thanks for sharing! Great way you to introduce yourself! Sent from my iPhone using Tapatalk