Hydrometer Specific Gravity 1.720 to 1.790
Vee Gee Scientific
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