Robust and reliable levelling instrument kit with lightweight aluminium coupling tripod and telescopic levelling staff. This waterproof and dust-tight levelling instrument with high-performance lenses is ideal for applications in the construction industry. A precise, air-damped compensator provides the device with automatic horizontal adjustment of the target line. Distances are determined with the aid of the marks on the crosshairs with easy conversion of the display value from centimetres to metres (multiplier 100). An easy-to-use mirror assists alignment with a circular bubble level. A horizontal circle with infinite vernier adjustment facilitates precise targeting. Manual controls ensure convenient operation for the user. Lightweight aluminium tripod with spherical mounting surface for quick alignment of the AL 26. The extremely stable levelling staff is suitable for use under extreme conditions.