Measurement is the most important aspect of our life . We use measurement in science , engineering , business , personal life , education and more other fields. As technology is growing day by day so we need a highly accurate and easy convenient global measuring system in each and every field. It is essential to use standard measurement in every field that every one to be sure that they not get cheated .
In history for measurement people used the human body as a tool . For measuring length used forearm , hand , foot and finger as a unit . The foot , finger is a subdivided shorter unit of a length . This type of measurement is not accurate cause different in size of the arm & finger for different people and some of the countries still using it. In history there were lots of measuring systems developed but mostly used imperial, the metric system of measurement . We use these systems for measure distance , volume , length ,mass & weight , speed , area etc . Due to this a major problem everyone is facing while doing trading between the countries . A huge improvement in civilization , it neccssary to improve measuring standards . Now days international standards (SI) units are used as a global measurement system. A three dimensional space accupied by an object is called "Volume" defined by the international standard system of unit . Volume symbol is "V" and SI unit is cubic meter (m3), other units Litre , Fluid , aunce , galon , quart , pint , tsp , fluid dram ,In3 , Yd3, barrel .