You searched for: “oleometers
oleometer (s) (noun), oleometers (pl)
1. A hydrometer used to determine the specific gravity of oils, or calibrated in the range of specific gravity of oils: An oleometer is an instrument used for calculating the weight and purity of oils.
2. An apparatus for determining the content of oil in a material: An oleometer is helpful in ascertaining the amount of oil contained in nuts, seeds, in pressed seed-cakes, or in other items.