Item Type: Diagonal Eyepiece Material: Optical Glass, ABS Applicable Model: For FOIF total station. Use: For the measurement of tunnel, subway, mine, highway and so on. Application: Widely used in subway, railway, tunnel, dam, steep slope and other industries. 1Durable Material: The diagonal eyepiece is made of ABS material to provide long term strength and continuous use, durable and resistant to harsh work site conditions. 2Accurate and Practical: When using a total station, accurate measurements can be made in steep areas, and the eyepiece can effectively measure any target on the rangefinder, as well as points and angles in any direction. 3Clear and Small Error: 90 degree elbow eyepiece, clear imaging, clear interface, easy to observe, reduce error. 4Scope of Application: Diagonal eyepiece can be used for tunnel, subway, mine, highway and other detection, suitable for FOIF total station and other measuring instruments. 5Wide Range of Uses: The total station elbow eyepiece is widely used in subway, railway, tunnel, dam, steep slope and other industries.1 x Diagonal Eyepiece 1 x Cover 1 x Storage Bag