Davidson Optronics D-638 Coordinate Autocollimator
The Davidson Optronics D-638 Coordinate Autocollimator is a high-precision optical metrology instrument designed to measure extremely small angular deviations and to align precision mechanical and optical components.
Unlike a standard single-axis autocollimator, the D-638 can measure angular displacement about both the X and Y axes, making it well suited for alignment and calibration tasks in laboratories and manufacturing environments.
It features a ce3nter-tilted eyepiece designed for easy alignment and fine adjustment screws for Azimuth and elevation.
Serial Numbers 206,280,and 380


















