Litres.
I would use either cubic centimeters or cubic inches.
no
cm
Grams.
Centimeters and grams.
There is really no such thing as a "liquid" unit. The unit of measure is for the VOLUME of something. The best unit for measuring the volume of a human bathtub would be the "Litre".
mililiters
Kilograms
My penis
you measure liquid or volume.
You would determine the volume of water it displaces and measure it.
You would use a tape measure.
I would use to measure a volume of a glass liters. Signed Luini, liters are bigger than milliliters and liters are about the volume of a glass.