OMNI L-Bar Monitoring Prism Assembly – Silver Coated – 25 mm The OMNI L-Bar Monitoring Prism Assembly is a durable, low-profile solution designed for permanent installation in deformation monitoring and structural surveying applications. Featuring a precision 25 mm silver-coated prism, this assembly provides consistent accuracy and reliable performance for long-term monitoring projects. Built with a rugged anodized aluminum housing and hermetically sealed construction , the L-bar design enables easy mounting while maintaining a compact, unobtrusive profile. With standard monitoring offsets and dual mounting points, it offers a flexible and cost-effective solution for a wide range of monitoring environments. Key Features • 25 mm silver-coated prism – optimized for consistent measurement performance • 2 arc second accuracy – suitable for precision monitoring • Hermetically sealed – protects against dust, moisture, and environmental exposure • Anodized aluminum L-bar – durable and low-profile design • Dual mounting holes (8 mm / 5/16″) – flexible installation options • Prism constants: approx. -25.5 mm (Trimble/Topcon) / +8.9 mm (Leica) • Ideal for structural monitoring, deformation analysis, and control networks