Mini 360° Prism for Total Station, 1.5 mm Accuracy

【Precision Optics】Copper-coated BK7 glass reflectors and K9 triangular prisms provide 1.5 mm accuracy, ensuring a crisp signal return for ATR locking on robotic total stations up to 350 meters.
【Maintenance-Free】The 360° design with a top wire hole accepts a 0.4 mm steel cable for the hanging lead, allowing continuous strain checks in deep vertical shafts without repositioning.
【Constant +29 mm for 800 m】A fixed prism constant of +29 mm and an effective diameter of 10.37 mm ensure a crisp measuring range of 800 meters, ideal for long-range bridge and tunnel alignment.
【Targets Visible in Low Light】Anti-reflective coated target plates improve reticle visibility in dark underground mines. or tunnels, reducing aiming errors during critical surveys at height or on steep slopes.
【Robust 1/4-inch Threaded Mount】The aluminum alloy housing with a standard 1/4-inch threaded base mounts directly onto poles, tribrachs, or mini-rods, resisting corrosion in dam and railway inspection environments.