Seco Tri-Max Standard Screw Clamp Instrument Tripod The Seco 90551 Tri-Max® is a survey-grade instrument tripod engineered for certified accuracy and long-term stability , making it suitable for precision field measurement applications. Designed on the Tri-Max platform, it meets ISO 12858-2-H standards , ensuring consistent performance from initial setup through extended field use. Constructed with fiberglass legs and durable black hardware , this tripod features a 6-5/8" flat head with a large 2-5/8" center hole for efficient setup over a point. It includes an internal leg retention system to help prevent kick-out on slick surfaces, along with a wide footbed and replaceable points for stable placement across varied terrain. The screw clamp locking system provides secure, fine-adjustable leg positioning for controlled setup and rigidity. Key Features • ISO 12858-2-H certified accuracy for survey-grade performance • Fiberglass legs for stability and vibration resistance • 6-5/8" flat head with 2-5/8" center hole for easy setup over a point • Screw clamp locking system for precise, secure adjustment • Internal leg retention system for added safety on slick surfaces • Supports up to 65 lb (30 kg) • Collapsed: 44.5 in (113 cm) / Extended: 71 in (1.8 m) Ideal For This tripod is ideal for supporting robotic and servo-driven total stations, 3D laser scanners, and construction lasers requiring certified stability and precise setup control. It is well-suited for professionals in surveying, geospatial engineering, construction, and infrastructure layout , particularly in applications where accuracy, repeatability, and dependable field performance are essential.