the appropriate SI unit for expressing the length of a finger is ( cm )
A tenth of a metre.
the most appropriate measurement for an ant would be the millimeter
Metres would be the best unit to measure the length of a backyard
A metre would be an appropriate unit.
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.
A tape measure that measure in feet and inches (or meters and centimeters) would be most appropriate.
The most appropriate unit is a centimetre, though a metre to two decimal places is exactly as accurate.
A centimetre would be the most appropriate unit.
Probably kilometers or miles :)