Pro-Model Precision Thermohydrometer by Alla

This is a large, professional instrument used for measuring specific gravity with precision and accuracy. This hydrometer comes with an enlarged test jar with a screw off base.

Alla France hydrometers have been adjusted using the hydrostatic balance method on an automatic adjusting machine. The unit of measurement, the calibration temperature, the superficial tension (mN/m) and the reading (above or below the meniscus) appear on the scale of the instrument. Includes Certificate of Conformity.