We measure various things in our daily life. In the past, measurements were done using different parts of human body. For e.g. Feet, handbreadths, fathom etc. But there are many limitations on accuracy of such measurements. For e.g. length of handbreadth varies from a person. Therefore, need of standard measurement practices was emerged. The method of measurement depends upon the accuracy required. In this chapter, we are going to study measurement, commonly used units, basic units and derived units.
After going this lesson, you will be able to:
• define Importance of measurement, SI units
- explain Quantitative and Qualitative measurements
- define Base Units and derived units
- explain Least Count of instruments
- estimate weight of goods