SitePro Diagonal Eyepiece for DT8-05 Series The SitePro Diagonal Eyepiece is a specialized optical accessory designed to enhance the functionality of DT8-05 series theodolites when working in challenging sighting conditions . Ideal for measuring steep vertical angles or working around obstacles such as buildings or tight jobsite environments, it improves operator positioning while maintaining clear line-of-sight to the target. Engineered to deliver an erect image with a wide viewing angle , the eyepiece enables accurate angle measurement in multiple directions while extending usable working distance. Compatible with DT8-05 series models, it provides a practical solution for improving visibility and measurement flexibility in complex surveying and construction layouts. Key Features: Designed for DT8-05 series theodolites Enables measurement of steep vertical angles and obstructed sight lines Provides erect image with approximately 1°–30' angle of view Allows measurements in multiple directions Improves usability in confined or obstacle-heavy environments