Jay R
Flashlight Enthusiast
It just occurred to me that, though I've always known it, I have never seen fishing tackle shops mentioned on CPF as a good place to buy tritium vials. Anglers use them as bite indicators on the end of their rods or floats. I found all sorts of different sizes. Perhaps you don't get them in the US as I just did a quick search and most of the English websites it pulled up were at .co.uk domains.
Still, if you are in the UK and want some trits...
Still, if you are in the UK and want some trits...