they are in Hands
The point on the horse is the height measurement taken is the withers.
The measurement unit depends on the characteristic that is being measured.
kilometers
It is measured in grams.
hg is a measurement of Vacuum measured in Inches of Murcury.
Decibel is a measurement of loudness.
Microns, this is measured with a micrometer
measurement of volume.
The unit of measurement of height in the US is based on the English units. The English unit generally used meter and kilograms while in the UK people generally used centimeters when referring to height measurement.
It can be measured in any unit of measurement. *Edit: Remember that volume can be in any unit but it has to be cubed.
When multiplying length by width by height, the volume of the object is calculated. Volume is measured in cubic metres, or m3.
Probably the pound.