Finding length of AB with ruler


We measure AB

& AB = 6.5 cm

But , there can be errors……..


We might have difficulty reading over the marks in the pointer


We can also have positioning error


Positioning error


If our eyes are not vertically on top of the object,

we may get errors due to angular viewing.


So, how do we get rid of such errors?

We use a divider.   


  1. Chapter 5 Class 6 Understanding Elementary Shapes
  2. Concept wise

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.