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Total station (station point)
Prism on pole
EDM beam
Recorded points & traverse
Starting…
HA --- VA --- SD ---
E --- N --- Z ---
- The instrument is set over a known station and levelled; every measurement is referenced to this point.
- The rodman walks the prism to each detail point — over real terrain, exactly as on site.
- The EDM beam reflects off the prism: travel time gives slope distance while encoders read both angles.
- Each point becomes an (E, N, Z) coordinate and the traverse polyline grows — the raw material of every site plan.
Stylized real-time simulation. Field accuracy: ±(2 mm + 2 ppm) in distance, 1″–5″ in angle.