Product Name: Leica-Style Compatible Prism and Tribrach Kit Model NO.: ADS16 Prism Material: Bk7 Effective Diameter: 65 mm Coating: Copper Coated Prism Canister Color: Black Adapter&Tribrach Material: Green metal Packing: Plastic Carrying Case or Soft Padded Bag Prism Precision: 3"-5" Prism Accuracy: 3"-5" Trademark: customized Transport Package: Standard Export Carton Specification: SGS Origin: Jiangsu, China HS Code: 90159000 Product Description LEICA Compatible Prism and Tribrach Kit ADS16Effective diameter: 65mm.Offset: 0mm.Copper Coated.Black prism canister, Green metal adapter&tribrach.Packing: Standard plastic carrying case or soft padded bag.Used with Leica Instruments.PURPOSE OF THE TRIBRACHThe tribrach enables surveying equipment to be levelled and centred over a benchmark. To achieve accurate measurements, the tribrach must ensure a firm connection between the tripod head and mounted instrument.The stability of the tripod and tribrach is the primary influence on the reliability of measurements. The critical factor for accuracy is the provision of a stable platform for the instrument; if the base is unstable the measurements will be unreliable.FEATURES OF THE TRIBRACHOur tribrachs are designed to operate reliably even in extreme temperature, humid and dusty conditions. In all situations, the maintenance-free foot screws ensure a movement that is always smooth and free of play.The support area of the tribrach is matched precisely to the base circumference of Leica Geosystems equipment. This provides extremely accurate forced centring.Even after a long operating life, the quality and precision characteristics are maintained.ACCURACY 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.REFLECTIVE COATINGLeica prisms have a copper coating on the reflecting surfaces. Copper offers a very high reflectance of infrared beams. Being robust and resistant to corrosion it has a long useable life.