Features ACCURATE AND COMPREHENSIVE: When using a total station, accurate measurements can be made in steep areas, and the eyepiece can effectively measure any target from the distance instrument, as well as points and angles in any direction. DURABLE STEEL: Diagonal eyepieces are crafted from solid steel material to provide long term strength and continuous use, durable and resistant to harsh job site conditions. CLEAR AND SMALL ERROR: 90 degree elbow eyepiece bring clear imaging, snap interface, easy to observe and reduce error. WIDE RANGE OF USES: Total station elbow eyepiece is widely used in subway, railway, tunnel, dam, steep slope and other industries. SCOPE OF APPLICATION: Diagonal eyepiece can be used in tunnels, subways, mines, highways and other inspection, suitable for measuring instruments. Specification: Item Type: Diagonal Eyepiece Material: Optical glass and steel Application: Tunnel, subway, mine, highway and other detection, suitable for Leica and other measuring instruments Application: Widely used in subway, railway, tunnel, dam, steep slope and other industries Package List: 1 x Diagonal Eyepiece 1 x Storage Bag Package List 1 x Diagonal Eyepiece 1 x Storage Bag