1.5" (38.1mm) Sphere Monitoring Prism for Railway Total Station, -17.5mm Offset, with Magnetic Base, Precision Surveying Target for Total Station, Construction & Industrial Measurement, Silver Coated

1.5" (38.1mm) Sphere Monitoring Prism for Railway Total Station, -17.5mm Offset, with Magnetic Base, Precision Surveying Target for Total Station, Construction & Industrial Measurement, Silver Coated

• 【Precision 1.5" Spherical Design】38.1mm diameter steel housing with silver-coated prism core, ensures consistent reflection center for high-accuracy total station measurements.
• 【-17.5mm Prism Constant】Factory calibrated offset value, compatible with most total station brands when properly configured.
• 【Strong Magnetic Base (40mm)】Built-in 40mm diameter magnet base provides reliable attachment to steel surfaces, pipes, beams, and rail tracks without additional tools.
• 【Durable Silver Coating】Corrosion-resistant silver reflective coating maintains long-term performance in construction, tunnel, and industrial environments.
• 【Versatile Application】Ideal for railway alignment, tunnel deformation monitoring, bridge inspection, machine installation, and general construction layout.