Geodetic levelling staff and method of use thereof

A geodetic levelling staff, comprising:

• at least one circular level configured in the geodetic levelling staff,
• at least one level detection unit positioned in an alignment with the at least one circular level, wherein the at least one level detection unit directly sense the at least one circular level,
• at least one control circuit arranged to receive and transmit detected data generated by the at least one level detection unit,
• at least one near field communication tool arranged on the geodetic levelling staff to communicate with a level according to the detected data from the at least one control circuit, and
• at least one power source providing a power to the at least one control circuit,
• the at least one level detection unit and the at least one near field communication tool,
• wherein the at least one control circuit is configured to transmit data wirelessly from the geodetic levelling staff to the level, via the at least one near field communication tool, the transmitted data preventing the level from performing a measurement in response to the geodetic levelling staff being in a position other than a vertical position, and the transmitted data permitting the level to perform a measurement when the geodetic levelling staff is in a vertical position.