It meaures in centimeters and inches.
With a "ruler" or "tape measure" calibrated in imperial units
the same as it would be if you measured it with a tape measure as long as you were accurate
In mathematics, two quantities are said to be in units agreement if they have the same units of measure. For example, if two quantities are both measured in meters, then they are in units agreement. If one quantity is measured in meters and the other is measured in centimeters, then they are not in units agreement.
You measure length in many ways: using a ruler or yardstick, using a string or tape measure, using a machine to drive or fly over a distance, or using a satellite. Length is measured in units such as centimeters, meters, kilometers, or inches, yards and miles.
A ruler that can measure very small units.
Then what do you measure it with?
Area is measured in square units.
Area is measured in square units.
With a "ruler" or "tape measure" calibrated in imperial units
That depends on the ruler. The most common units of measure for rulers are centimeters and inches.
You use a ruler or tape measure to measure this in units of choice
Volume is measured in cubic units. It is also measured in liters.
the same as it would be if you measured it with a tape measure as long as you were accurate
Volume is measured in cubic units
A ruler
Measure the wound with a ruler in centimeters.
You can measure your card's size with a ruler.