Features Telituny Digital Tachometer UT373 Mini Digital Tachometer LCD Non-Contact Laser RPM Speedometer Speed Meter with Backlight for Home Lab 1. Compact and Portable: The spherical surveying prism head features its small size and compact structure, making it easy to carry and convenient to use. It coordinates seamlessly with measuring devices for efficient and accurate measurements. 2. Rugged Construction: Constructed of K9 glass and aluminum alloy materials, the total station surveying prism head provides clarity, efficiency and long durability, ensuring years of optimal performance even in the most difficult conditions. 3. Advanced Measurement Features: Equipped with a 100mm scanning ball with integrated prism and a 64mm diameter prism with zero constant (absolute value of 0mm), this accessory is designed for accurate measurements and seamless integration with measuring instruments. 4 . Magnetic Base: Equipped with a surveying mini prism head with a magnetic base, this surveying prism head ensures stability and high-precision measurements. It is suitable for use with various total stations and is ideal for a wide range of measurement scenarios, guaranteeing accurate and results. 5. Good Compatibility: With a 5/8 inch female thread, a Swiss plug adapter and a zippered box with padding, the total station prism head allows for easy attachment to measuring instruments. This setup allows you to effortlessly switch 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: 64 mm/2.52 inches Scan ball: 100 mm/3.94 inches Internal thread: 5/8 inches/1.59 cm Constant: 0 mm joint Use: Used with total stations, high precision measurements, e.g. B. in high-speed trains, shipbuilding, railways and construction site measurements. Package list: 1 x total station ball prism head 1 x storage bag Package List