Item Type: Survey Prism <br>Material: Optical Glass, ABS <br>Constant: +2mm <br>Effective Diameter: Approx. 25.4mm/1in <br>Use: Used for Leica total station engineering tunnel surveying<br>1、45 DEGREE REFLECTION: This survey prism is designed for single side 45 degree reflection, with an effective diameter of 25.4mm, and a constant of +2mm. <br>2、OPTICAL GLASS: This prism uses optical glass, which enhances reflection ability, with full texture, clear and bright, making the measurement more accurate. <br>3、WIDE APPLICATION: Total station prism can be installed in tunnels, roads, bridges, dams, buildings or some other fixed places or objects to measure distortion and displacement. <br>4、STRONG COMPATIBILITY: This 45 degree prism is suitable for Leica and other different types of total stations, widely compatible. <br>5、LONG LASTING: The total station prism is made of ABS material, which is sturdy and firm, not easily be damaged, ensuring long lasting use.1 x Survey Prism