Levelling

Levelling or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to establish or verify or measure the height of specified points relative to a datum. It is widely used in geodesy and cartography to measure vertical position with respect to a vertical datum, and in construction to measure height differences of construction artifacts.

This article is about the surveying technique. For other uses, see Levelling (disambiguation).
"Spirit levelling" redirects here. For the bubble level, see Spirit level.
"Single-levelling" redirects here. For other uses, see Single-level (disambiguation).
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.