RE: Tritium Watch

["Mercado, Don" <don.mercado@lmco.com>]

	You wrote:


	>I recently happened upon a watch that I wore through high
school 
	>(until 1981) which is a Timex .  On the back is the 3H symbol
for  
	>tritium.  The small face of the watch dial glows continuously
with a 
	>dull green glow...

	>Wondering is anyone has seen a similar watch or might know how
much 
	>tritium was typically used?

	>Thanks.

	>Ron Amoling
	>amolingr@joslab.harvard.edu

I have a watch here marked "A product of National Semiconductor"
indicating it contains 200 mCi of H-3.