CM/LM Crewman Optical Alignment Sight (COAS) Light Assembly. The COAS assisted alignment of the Command and Lunar Modules for docking. The unit required placement of a light assembly to illuminate a COAS generated reticle image which both the CMP and CDR could align with a corresponding target that was mounted on each vehicle. With copies of material fully describing and illustrating the COAS system. Approximately 1.5x2 inches with a circular base and labeled with part number B50258-1, lot number 225, and inspection stamps. Jay-El Products for Grumman, nd
