1WEAR RESISTANT COATING: The lens is coated with oxidized plastic to ensure good wear resistance and impact resistance, which greatly extend the service life of the prism lens 2ACCURATE AND RELIABLE: Total station prism use excellent optical glass that is finely cut and polished to ensure accurate measurements 3STABLE STRUCTURE: The right angle prism is equipped with L shaped bracket, bring stable operation, more reliable 4APPLICABLE SCENARIO: Right degree prism is widely used in railway, tunnel, highway, mine detection, very versatile 5CLEAR AND ACCURATE: Enhance the reflection ability of prism, possess full texture, clear and bright, improve the accuracy of measurement, measurement work become more simple