A Levelling Staff is an essential tool used in surveying for measuring vertical distances and determining elevation levels with precision. Typically made from lightweight yet durable materials like aluminum or fiberglass, it features clearly marked graduations for accurate height readings. The staff includes a sliding prism or target for compatibility with surveying instruments such as auto levels and total stations, ensuring reliable data collection in various field conditions. Its telescopic sections allow for easy adjustment of height, enhancing versatility and efficiency during surveying tasks. The Levelling Staff is indispensable for professionals requiring accurate elevation measurements in construction, engineering, and land surveying.