Question

the system of unit measurement used now days​

Answer 1

the International System of Units (Système international d'unités or SI)

Answer 2

• International System of Units  is the current international standard for the metric system.
• It's a system where all units are stated in terms of seven. The meter, kilogram, second, ampere, kelvin, mole, and candela are used as the SI basic units.

• Since France adopted the first well-defined system in 1795, metric systems of units have evolved.
• The usage of these systems has extended around the world during this development, first to non-English speaking nations and later to English speaking countries.

• Powers of ten are used to connect multiples and submultiples of metric units, and prefixes are used to create their names.
• This connection is consistent with the decimal system of numbers and considerably enhances the use of metric units.