A centimetre.
The 'foot' or the 'meter' would both do nicely.
Answer: Inches
A kilometre.
The appropriate unit to measure weight is the newton. Now, if it is really the mass you wanted, you could use kilogram or gram.
You can't just convert any unit into any other unit. The units must be compatible - measure the same type of thing. For example, you can convert a unit of length to another unit of length, or a unit of time to another unit of time. An atmosphere is a measure of pressure, a foot is a measure of length, so you can't convert it.
Length would be the most appropriate unit of measurement
Hs
yards
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.
feet
miles
Meters
millometers
Meters
feet
millimeter
The appropriate unit is a metre.