centimeters
ruler
miles or kilomiters
feet
miles
A metres, for an approximate measure, a centimetre for a more accurate measure.
Millimeters
ruler
Mm
By unit of length and distance and conversion ,we can say that a finger nail is measured with millimeters.
None! I would measure in centimeters if I were you!
Millimetres.
By unit of length and distance and conversion ,we can say that the most appropriate unit to measure the length of a finger is cm.
Inches
cm
always the meter to measure length. This is an SI (international) unit of measurment, and is the standard international unit of measurment for length.
I would use feet
You would use meters.