Hydrometers
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                                 Used to determine the specific gravity / relative density (g/cmᶟ) of battery acid in the range of 1.... 
                            H-B DURAC Battery Hydrometer with Siphon Set; Traceable to NIST 1 result
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                                 This Hydrometer Set consists of eight DURAC® Specific Gravity / Relative Density (g/cmᶟ) Plain Form ... 
                            H-B DURAC Specific Gravity / Relative Density (g/cmᶟ) Hydrometer Set with EnviroSafe Thermometer; Traceable to NIST 1 result
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