Important Notification Regarding the Cygnus Product Range http://www.cygnus-instruments.com/assets/public_files/distributors-area/technical-documents/multipleecho-echoecho-singleecho-explanations.pdf?utm_source=mailshot&utm_medium=email&utm_content=Distributors&utm_campaign=DIVE%20Product%20Bulletin FKHIV 17 October, 2015 2015