An instrument for identifying the extra weight and purity of oil.
An instrument for ascertaining the extra weight and purity of oil; an elaiometer.
A Guitar for ascertaining the weight and purity of oil; an elæometer.
An apparatus for deciding the proportion of oil contained in seeds, nuts, pushed seed-cakes, alongside materials. It's therefore contrived regarding enable of a tiny quantity of a volatile solvent being used to extract the oil, becoming distilled right back upon the material under treatment, and filtered through it many times in succession. See Soxhlet's extraction apparatus.