Neidio i'r prif gynnwy

Saesneg: surveying

Cymraeg: tirfesur

Rhan ymadrodd

Berf

Diffiniad

The practice of measuring locations and boundaries. Using precision instruments, surveying provides exact measurements of the absolute location of places and their relative position to each other, and traditionally has provided the raw data for map-making by plotting the positions of objects, the paths between them, and the boundaries of parcels of land.