Duratech Tribrach – Optical Plummet – Black The Duratech Tribrach is a precision mounting accessory designed for stable and repeatable positioning of GNSS receivers, prisms, and other survey instruments. Built for reliable field performance, this tribrach provides a secure interface between instruments and survey tripods, adapters, and mounting systems. Equipped with an optical plummet with twist focus , it allows for accurate centering over control points, improving setup precision and efficiency in the field. A circular vial and three leveling screws enable fast, precise leveling, while the standard 5/8″-11 threaded base ensures compatibility with common surveying equipment. Key Features • Optical plummet with twist focus – precise and easy centering over control points • Circular vial and three leveling screws – quick and accurate leveling • 5/8″-11 thread – compatible with standard tripods and survey equipment • Stable tribrach base – ensures repeatable instrument positioning • Durable construction – built for reliable field performance • Ideal for GNSS receivers, prisms, and other surveying instruments