That depends what aspect of the glass of water you want to measure: its height, its volume, its mass, its index of refraction, etc.
A meter stick would be one. A metric tape measure would be another.A measuring tape.a rulerA meter stickyou can use a metric tape or a yardstick or a metre trundle wheel and finally a metre stickA tape measure, calibrated in meters.A meterstickusually a metric measuring tape.
There are many instruments used. And it all comes down to what you want the water for. For a general estimate, a beaker can be used for larger quantities of water, but the measurements can be off. A graduated cylinder is great for measuring accurately, but generally doesn't hold as much water. Extremely accurate devices include a pipet (like a big eyedropper) or a buret. But these generally hold very very small amounts of water. If you don't know what these devices look like, you can simply Google them.
Bottles come in many different sizes, the most common use the metric system of measurement, a typical bottle of water would be 500mls (half a litre) or larger.
It depends on the amount of water. In the metric system, water would be measured by liters, with a prefix if needed (Kilo, Hecto, Deca, etc.)
Liters
its liters
Pints
You would use the metric unit "liters" to measure the capacity of a hot water tank.
Milliliters or fluid ounces would be reasonable metric units to measure the capacity of a drinking glass. These units are commonly used for measuring liquid volumes and would provide a clear indication of the glass's capacity.
Kilometers.
That depends what aspect of the glass of water you want to measure: its height, its volume, its mass, its index of refraction, etc.
Kilogram
I wiil use water
You would use a millilitre or, equivalently, a cubic centimetre. A larger unit, which could be used, is a litre.
1 US gallon = 3.78541178 liters. Only if you mean pure water, then 1000 litres of water weighs 1 metric tonne. 1000 litres of water are 264.172052357 gallons that weigh 1 metric tonne.
Metres
You would use kilograms (kg) to measure someone's mass in metric units.