# A report on Unit of measurement

Definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.

- Unit of measurement28 related topics with Alpha

## International System of Units

11 linksModern form of the metric system and the world's most widely used system of measurement.

Modern form of the metric system and the world's most widely used system of measurement.

The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity).

## System of measurement

8 linksA system of measurement is a collection of units of measurement and rules relating them to each other.

## Metre

6 linksBase unit of length in the International System of Units (SI).

Base unit of length in the International System of Units (SI).

The SI unit symbol is m.

## Metrology

4 linksScientific study of measurement.

Scientific study of measurement.

Scientific or fundamental metrology, concerned with the establishment of units of measurement

## Metric system

5 linksSystem of measurement that succeeded the decimalised system based on the metre that had been introduced in France in the 1790s.

System of measurement that succeeded the decimalised system based on the metre that had been introduced in France in the 1790s.

Designed for transnational use, it consisted of a basic set of units of measurement, now known as base units.

## Length

6 linksMeasure of distance.

Measure of distance.

There are several units that are used to measure length.

## Inch

4 linksThe inch (symbol: in or ″) is a unit of length in the British imperial and the United States customary systems of measurement.

## Dimensional analysis

3 linksIn engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric current) and units of measure (such as miles vs. kilometres, or pounds vs. kilograms) and tracking these dimensions as calculations or comparisons are performed.

## Measurement

3 linksQuantification of attributes of an object or event, which can be used to compare with other objects or events.

Quantification of attributes of an object or event, which can be used to compare with other objects or events.

Units of measurement are generally defined on a scientific basis, overseen by governmental or independent agencies, and established in international treaties, pre-eminent of which is the General Conference on Weights and Measures (CGPM), established in 1875 by the Metre Convention, overseeing the International System of Units (SI).

## Physical quantity

1 linksPhysical property of a material or system that can be quantified by measurement.

Physical property of a material or system that can be quantified by measurement.

A physical quantity can be expressed as a value, which is the algebraic multiplication of a numerical value and a unit.