Hydrometer Specific Gravity 0.640 to 0.710

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A Specific Gravity Hydrometer calibrated to show the ratio of a mass of liquid to an equivalent volume of distilled water@ 60 °F.Manufactured in strict accordance to specifications for ASTM (American Society for Testing and Materials) for accuracy and design. All instruments are suitable for certification for use as a primary reference standard with NIST traceability Specifications: Range 0.640 to 0.710 Subdivision 0.0005 Tolerance +/- 0.0005 Length 330 mm / 12.99" The 450 mL hydrometer jar should be used with this instrument Show more