Product Name: Mini Prism for Rail Model NO.: ADS112 Prism Diameter: 12.7mm Coating: Silver-Coated Measuring Range: up to 1000m N.W.: 110g Application: Mining, Tunneling, Monitoring and Rail Trademark: OEM Transport Package: Standard Export Carton Specification: SGS Origin: Jiangsu, China HS Code: 90159000 Product Description Circular Monitoring Prism/Catseye Prism/Mini Prism1. Prism: Diameter:12.7mm; Accuracy:≤8"; Silver-coated2. Measuring Range: up to 1000m3. Aluminum housing: 14.3*14.3*2cm4. N.W.:110g5.Features: Specially designed for Mining, tunneling, monitoring and railACCURACY OF THE REFLECTORA circular prism is manufactured by cutting the corner from a solid glass cube. This creates three mutually orthogonal reflecting surfaces that reflect any light rays back towards their source.ANGULAR BEAM DEVIATIonThe angular difference between the entering and exiting beam is known as Angular Beam Deviation. A high deviation significantly reduces the returned signal strength and hence the measurement range.After manufacture, each prism is measured by Zygo inferometer to determine its beam deviation.Product: