feet
A ruler would work best if you are wanting to measure the length of an eye dropper.
The best unit of measurement to measure an alligator is in feet or meters, depending on your preference. Alligators can range in size from a few feet to over 15 feet long, so using a length measurement helps accurately capture their size.
The best unit of measurement to measure an alligator is in feet or meters, as these units are commonly used for measuring the length of large animals.
gallon
Answer: meters
The best unit of measurement for the volume of water they collect would be liters (L) or milliliters (mL). These units are commonly used to measure liquid volume and will provide a more accurate measurement compared to other units such as gallons or cups.
"http://wiki.answers.com/Q/Which_piece_of_equipment_can_best_measure_the_volume_of_ink_in_a_pen" graduated cylinder
you will use cm because it is useful then the other types of measurement
Litres for a domestic aquarium, kilolitres for a large [public] aquarium.
it is a base 10 measurement system.
A millimetre.
The best measurement unit to measure the area of a ping pong table is square feet or square meters, depending on your preference. These units provide a clear and understandable measurement of the table's surface area.