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Possibly one of the Italian scientists of the period of Torricelli and Galileo who were involved with Weather instruments such as the now-obsolete columnar barometer still used metaphorically in fund raising events! The clever argument that Wassermann ( of VD blood test fame) invented the Hydrometer appears to be play on words ( Wassermann literally means Water Man) -but they do use the same scale- 4.l0 being the highest reading ( applies to battery hydrometers of the more modern type- and the Syphilis test. oh by the way it is 4.0 or 4 Plus.
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