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Old 01-21-2013, 01:35 AM   #4
spacekadet OP
Gnarly Adventurer
Joined: Jun 2006
Location: Sydney, NSW
Oddometer: 235
Originally Posted by Tim McKittrick View Post
A few moments with uncle Google finds:

I don't know if either will fit in a helmet though.....
I could not see any info about how those things work - do you know if they are mechanical, i.e. pressure from the droopy head? Or is it a beam on the eye? Beam would possibly work but mechanical would not.
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