Seco 3.6 m Twist Lock Telescopic Aluminum Prism Pole - Red & White The Seco 5520-21 is a durable aluminum telescopic pole designed for surveying and construction applications requiring reliable reach and repeatable measurements. Its two-section design extends to 3.60 m (11.81 ft) and collapses to 1.58 m (5.18 ft), with metric (cm) graduations for accurate field use. This model features a TLV lock system with integrated 40-minute vial for secure height adjustment and quick leveling. The soft rubber knob allows easy operation even with gloves, while the adjustable tip supports flexible setup configurations. Key Features • Aluminum construction (powder-coated and silk screened) • Two-section telescopic design : 3.60 m (11.81 ft) extended / 1.58 m (5.18 ft) collapsed • Metric graduations (cm) • TLV locking system with built-in 40-minute vial • Soft rubber locking knob for easy field adjustment • Adjustable tip for versatile target height setups • Wear-resistant design for long service life • Red and white finish