What is meant by zero circle? State the advantages of digital planimeter over polar planimeter.

What is meant by zero circle? State the advantages of digital planimeter over polar planimeter.
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1 Answer

Answer :

Zero circle:- When the tracing point is moved along a circle without rotation of the wheel i.e. when the wheel slides without any change in reading ,the circle is known as the zero circle or circle of correction.


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Advantages of digital planimeter -

1) It does not required to take the reading.

2) No calculations are required for area.

3) It gives more accurate reading

4) Less time required for measurement

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Description : State any four uses of contour.

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Description : State Bowditch’s Rule. 

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Description : Define tacheometer. State essential characteristics of tacheometer.

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Description : State any two application of each of GIS in land information and land environmental field.

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