For Length, the Egyptian cubit is one of the oldest. In hieroglyphs it was shewn as an arm, and is considered equivalent to about 52 inches. It was divided into 7 palms, each of 4 digits. For a modern adult, 52 inches is close to the distance from a fingertip to the opposite armpit. No doubt is was standardized against some authoritative figure.
But Roman cubits were a different length.
A carat was another old measure, based on the seed of the carob. Sill used in measurement of the weight of a diamond.
And a foot is considered to have been based originally upon the foot of a (you guessed it!) a prominent person.
The basic component inside the system unit is the Central Processing Unit.
The basic unit of mass in the metric system is the gram.
Polis, or "city state," was the basic politicial unit of Greece.
Ancient Greek is the basic unit used to measure liquid. Ancient Greek can change location and epoch.
The basic unit in the metric system for length is the meter.
Newtons is the basic metric system unit for weight
nerve system
The Kelvin is the official unit of temperature in the SI.
The pound is the basic unit.
Serfs
By unit of length and distance and conversion ,we can say that the basic unit of length in the metric system the meter.
the basic unit of weight in metric system; equal to 0.35 ounces