Leica GZR103 Carrier with Optical Plummet The Leica GZR103 Carrier with Optical Plummet is a rotatable precision carrier system from the Professional 3000 Series , designed for use in tribrachs without a built-in plummet, delivering accurate instrument centring, stable reflector positioning, and reliable field alignment for surveying applications. It includes a longitudinal bubble level to support precise setup and consistent leveling in demanding site conditions. Engineered for high-accuracy workflows, the GZR103 provides dual-purpose alignment capability, combining reflector centring precision with optical plummet functionality for dependable setup on control points and survey stations. Key Features • Rotatable carrier with integrated optical plummet for precise centring • Includes longitudinal bubble for accurate leveling and setup • Designed for tribrachs without built-in plummet systems • Reflector centring accuracy of 1.0 mm for reliable field measurements • Plummet accuracy of 0.5 mm at 1.5 m for precise positioning • Professional 3000 Series construction for durable survey performance