An 18th centruy Ivory hydrometer in an original rosewood case. In the reservoir are several of lead weightballs to adapt the weight of the hydro-meter which is required to determine the liquid. By changing the number of lead balls in the container, the weight of the specific hydro-meter can be changed. There is a scale of 1 to 12 over a length of 5.7 cmand there is a “P”engraved in the hydrometer. The Hydrometer length is 11 cm, and the rosewood case has a diameter of cm. Im good condition.
