Seco Telescopic Carbon Fiber Robotics Prism Pole  (135 mm H.T.) – Dual Grad  The Seco 5129-52 is a lightweight carbon fiber telescopic prism pole designed for robotic surveying applications. It is graduated to read direct for 135 mm prism height (commonly used with Trimble prisms) , with adapters available for other prism configurations. The pole extends from 1.52 m to 2.60 m and features dual graduations (cm and 0.01 ft) for flexible measurement reference. This model includes a TLV™ twist-lock system with integrated 40-minute vial for secure locking and quick leveling. A stainless steel pin-lock system with 0.5 ft spacing ensures consistent and repeatable height settings during field operations. Key Features • Carbon fiber construction (lightweight and durable) • Telescopic design: 1.52 m to 2.60 m (4.97 ft to 8.53 ft) • Dual graduations (cm / 0.01 ft) • Direct read for 135 mm prism height (Trimble-compatible) • TLV™ twist-lock system with integrated 40-minute vial • Stainless steel pin-lock with 0.5 ft increment spacing • Designed for robotic prism surveying applications