The Draft Survey Hydrometer was specially designed in collaboration with S.G.S. Van Bree N.V., Antwerp, member of Société Générale de Surveillance S.A., Geneva, to ensure precise measurement of the weight-to-volume relationship of supporting water during Draft Surveys on cargo vessels
Not all hydrometers are manufactured to the high standards of Zeal, whose quality is universally trusted
Supplied individually with certificate of conformity and instructions
