Features • Versatile Circle Drawing Tool: Effortlessly create precise circles and arcs with this redesigned tool, perfect for both professional and DIY projects • Durable Stainless Steel Construction: Crafted from high-quality stainless steel, this tool offers excellent resistance to wear and tear for long-lasting use • Adjustable Circumference: Easily modify the size of your circles, allowing for versatile applications in measurement, sketching, and design tasks • Lightweight and Portable Design: Compact and easy to carry, this tool is ideal for on-the-go projects, making it a must-have for any craftsman • User-Friendly Mechanism: Features an intuitive aperture adjustment, ensuring quick and smooth operation for efficient circle drawing every time Features: 1、WIDE APPLICATION: Can be installed in tunnels, roads and bridges, dams, buildings and structures or some other fixed places or objects 2、MULTI FUNCTION: Support objects measure, distortion, displacement, suitable for different types of total stations 3、SCOPE OF APPLICATION: Achieve detection of tunnels, subways, mines, etc., suitable for a variety of measuring instruments 4、 REPLACEMENT: Compatible with for Leica total stations, instead of GMP104, has stable structure and excellent performance 5、ACCURATE MEASUREMENT: Prism glass diameter is 25.4mm, constant for ？30mm, measuring range within 800meter, accurate and efficient Specification: Item Type: Total Station Prism Material: Copper, glass Prism Glass Diameter: Approx. 25.4mm / 1in Constant: -30mm Measuring Range: Within approx. 800meter / 2624.7ft Package List: 1 x Total Station Prism Package List 1 x Total Station Prism