Levelling – Level & Horizontal Surface, Datum, Benchmark, Focusing & Parallax
Levelling – Level & Horizontal Surface, Datum, Benchmark, Focusing & Parallax
In levelling, understanding basic concepts and terms is essential for accurate measurement of elevations. These concepts form the foundation of surveying practices. In ITI Draughtsman Civil, students must clearly understand level surfaces, horizontal surfaces, datum, benchmarks, focusing, and parallax.