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Hydrometers

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#804-1 Hydrometers, Heavy Liquids, 1.0--2.0  in .01divisions, overall length 30cm. #804-2 Hydrometers, Light Liquids, 0.7-1.0 in .01 divisions, overall length 30cm. #804-3 Hydrometers, Universal, 0.7-2.0 in .01 divisions, overall length 38cm.