Many thanks for your kind words.
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Great information as most of us know the unit, but not the man behind it. Where would be without Karl's invention? Thanks for keeping us informed about our diving history.
So True! Thank you, Steve, for a well written story that needed to be told. Excellent! Thanks to Karl for.... well, for a very long list of enhancements to our wonderful world of diving.Glad you enjoyed it. Karl is a very modest person who deserves more recognition for his great contributions to diving.