Meters
millimeter
feet
Inches
feet
Probably kilometers or miles :)
inches
A tenth of a metre.
feet
millimeter
Metres would probably be the most convenient.
Feet
feet
Inches
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.