I would use a ruler (metric) but careful to only measure the inside. You could also wet the beaker and place it on a piece of paper (rim down). This will leave a wet ring that you can measure. But be sure only to measure the dry inner part of the ring.
Beaker's are typically graduated in mililiters, and a mililiter is a cubic centimeter. So while centimeters would seem a reasonable choice, I would instead suggest using milimeters as they are well suited for precise measurements. There are 1000 cubic milimeters in one ml anyways so the conversion is easy if you were trying to measure the beaker in mm, calculate the volume, and convert to ml.
liquid volume
For this you would have to look at the beaker. Most modern beakers measure in litres and millilitres.
The diameter is the measurement of a line that goes right through a circle, through the centre point. In cases where we have a ring or some other such object with multiple circles, we would have an external diameter and an internal diameter. The internal diameter is the diameter of the inner circle. The external diameter is the diameter of the outer circle.
You should clarify what you want to measure about it: its diameter, mass, weight, color, etc. If you want to measure its diameter, that would usually be specified in microns (= micrometers).
The major diameter is the diameter of the crest of the thread. Use a Vernier gage and mesure the diameter of the crest points of contact ( maximum external thread diameter). Unified National thread series defines the expected major diamter and tolerance. For internal threads ( nuts) the major diameter is the diameter of the roots of the thread.
To measure the density of an object using a beaker, you would first fill the beaker with a known volume of liquid. Next, you would measure the initial volume of the liquid in the beaker and record it. Then, you would carefully lower the object into the beaker and measure the new volume of the liquid. The difference in volume of the liquid before and after adding the object divided by the mass of the object will give you the density.
First of all it's "What unit of measurement would you use to measure the diameter of a drink can?" Secondly you would probably use either centimeters or inches, depending on where you are in the world.
you would use a scale to measure the mass and a beaker to measure the volume. i need another tool
beaker
a large beaker and sponge
Calipers are used to measure the dimension of anarticle. In measuring a section of pipe you would use an inside caliper to give the internal diameter, and an outside caliper to give the external diameter. The difference being the thickness of the pipe wall.