feet
millimeter
Meters
Inches
feet
inches
feet
millimeter
Meters
Feet
Inches
feet
The most appropriate measure is a metre.
Grams is no good - it is a measure of weight not length. Kilometers measure length - but only if your table-top is a few miles long. Most appropriate would be Meters - your average dining table is about one-and-a-half meters long.
Probably kilometers or miles :)
A tape measure that measure in feet and inches (or meters and centimeters) would be most appropriate.
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.