The 'planimeter' in surveying is used to measure:
Choose the correct answer
Angles between survey lines
Area of irregular plane figures by tracing the boundary
Linear distances on a map
Height of objects using stadia
Correct Answer
B. Area of irregular plane figures by tracing the boundary
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Planimeter (mechanical or digital): measures AREA of an irregular figure on a map or drawing by tracing the perimeter. As the tracing arm is guided around the boundary, the wheel rolls and records area proportional to movement. Used for: plan area from maps, catchment area from topographic maps, cross-section areas for earthwork.
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