[AtomicTom]

OK I looked it up and it is pretty much common sense I am sure you already know but it is just like the pip on a diver to orient the wearer where the 12 o'clock is.

😀 Well I did know some of them do light up lume wise sir, but I am
not going to lie, I really didn’t know what they were for. 😊😄 ..So
thanks a bunch for looking that up, as well as teaching us something
very cool once again !