A beaker is a container which can also be used as a measuring device for volume. It is not a unit of measurement.
beaker
You must obtain and subtract the mass of the beaker.
You could pour the liquid into a measuring beaker or graduated jug.You could pour the liquid into a measuring beaker or graduated jug.
Fill the beaker with water, then pour it into a calibrated measuring jug
A beaker.
When measuring a liquid.
A measuring beaker.
the traditional use of a beaker is to hold liquids.
By measuring it in a measuring cylinder or beaker or some container of a known volume.
You need an analytical balance and a small beaker.
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
The uncertainty associated with measuring volume using a 100 ml beaker is typically around 1 ml.