Me neither ohjajohh - thinking about it, it makes sense that there would be waterproof exposure meters, but having never done any diving, let alone underwater photography, I'd never given the subject any thought before.
I've looked through my old camera mags and not found any mention of these meters, so they must have been fairly specialised, and therefore expensive at the time. Cheers for watching.
I've got one of these from a guy who was selling a Nikonos IVa to me and he showed me a bag full of item that he wanted to throw away so i looked and i've seen this light meter that he gave me for free, mine is older than yours, it's still in ASA and i have an additional window on the right with DIN, still works very well even with 1.5V alkaline batteries i have a good exposure. Very interresting item.
Hi Romarklin, they're an interesting little light meter - I believe they were selling for a decent price on the used market a number of years ago, but I suspect that it's such a niche market now (with most cameras having very accurate internal meters) that they're pretty hard to shift. Still a cool gadget to have in the collection.