An ivory hydrometer
early 18th Century
Boyle-pattern hydrometer, turned ivory, the stem divided 1-12, the lower section and stem both unscrew, in its original mahogany case comprised of four unscrewsing sections.
5¾in. (14.5cm.) long in case
An ivory hydrometer
early 18th Century
Boyle-pattern hydrometer, turned ivory, the stem divided 1-12, the lower section and stem both unscrew, in its original mahogany case comprised of four unscrewsing sections.
5¾in. (14.5cm.) long in case
