Dennis wrote:

I have used the old Liechtung version of those which is now sold by
woodworkers supply http://woodworker.com/cgi-bin/FULLPR...?PARTNUM=96974
They have been a trusted safety friend for almost 13 years now.

IIRC, that's where I got mine as well - and about the same time or even
earlier. They do seem to last :-).

--
It's turtles, all the way down