What instrument measures liquid?
The volume of a liquid can be measured by any instrument with specific label of liters/millileter (most standard).
Some items that can do this (in chemistry) are the beaker, the erlenmeyer flask, and for the most accuracy- the graduated cylinder.
The mass of a liquid (labelled in grams) can be found by measuring the mass of the liquid's container, the mass of the container with the liquid inside of it, and then subtracting the difference using a triple beam balance:
Mass of container and liquid combined - mass of container = mass of liquid
The density of a liquid can be found by dividing the liquid's
mass by it's volume (labeled in grams per square milliliter).
A measuring jug.