Some time ago tritium lights came to my attention, and I thought "Ha, that's pretty cool"
As usual, I haven't done anything about getting one, but I thought I'd have another look today. The usual suspects have them ranging in size from tiny to small and in price from $20 to $300.
I reckon some of you guys have beat me to this. Is it worth spending some bucks to get a tube? What's the smallest one you'd bother with?