The Geo-Fennel TN20C telescopic laser beam is a precision measuring tool constructed from robust aluminium, designed for professional construction and surveying applications. With an extended length of 2400 mm and a compact retracted form, this telescopic beam offers excellent portability while maintaining measurement accuracy across its full extension. The lower section features height adjustment capability for precise zero-setting operations, ensuring reliable calibration for various measurement tasks. This model includes an integrated box level for basic leveling verification and comes equipped with an adjustable clamp specifically designed for secure mounting of laser receivers. The TN20C is engineered for compatibility with rotating laser levels, making it an ideal accessory for construction site layout, foundation work, and interior finishing applications. The entire length features clear millimeter graduations, providing accurate reference points for distance measurement and marking. Weighing 900 g, this tool balances durability with manageable handling characteristics. The telescopic design allows for compact storage and transport while maintaining structural integrity during extended use. The aluminium construction provides resistance to typical jobsite conditions while minimizing weight. This laser beam is part of the Geo-Fennel professional tool range, recognized for precision instruments in the measurement and leveling category. The TN20C serves as a reliable companion tool for surveyors, construction professionals, and tradespeople requiring accurate vertical and horizontal reference points. Its design focuses on practical functionality with attention to detail in the clamping mechanism and adjustment features. The product maintains consistent performance across temperature variations typical of construction environments, with materials selected for long-term reliability in professional use conditions.