Feature: 1. Compact And Portable: The ball shape surveying prism head is characterized by its small size and compact structure, making it easy to carry and convenient to use. It seamlessly coordinates with measuring instruments for efficient and accurate measurements. 2. Sturdy Construction: Crafted from K9 glass and aluminum alloy materials, the total station surveying prism head offers clarity, efficiency, and long lasting durability, ensuring optimal performance even in the most challenging conditions for years to come. 3. Enhanced Measurement Capabilities: Equipped with a 100mm scanning sphere with an integrated prism and a 64mm diameter prism featuring zero constant (absolute value of 0mm), this accessory is designed for accurate measurements and seamless integration with measuring equipment. 4. Magnetic Base: Featuring a surveying mini prism head with a magnetic base, this surveying prism head ensures stability and high accuracy measurements. It is suitable for use with various total stations and is ideal for a wide range of measurement scenarios, guaranteeing accurate and reliable results. 5. Good Compatibility: With a 5/8in female thread, Swiss style plug adapter, and a zippered box with padding, the total station prism head enables easy attachment to measuring instruments. This setup allows for effortless switching between prism and scanning measurements at the same target location. Specification: Item Type: Total Station Ball Prism Head Model: BP004 Material: Aluminum Alloy, k9 Glass Prism Diameter: 64mm / 2.52in Scanning Sphere: 100mm / 3.94in Female Thread: 5/8in / 1.59cm Constant: 0mm Joint Use: Used with total station, high accuracy measurement, such as high speed rail, shipbuilding, railroad, construction site measurement.. Package List: 1 x Total Station Ball Prism Head 1 x Storage Bag