Precision visible light rectangular double convex lens made of BK7 optical glass. 47mm by 28mm by 7.45mm center thickness with a focal length of 125mm. Edge thickness is 1.46mm. Front diopter is 6.5 and back diopter is 1.5 resulting in an overall diopter of 8. High efficiency broadband anti-reflective coating on both sides. Chamfer edges. Includes mounting holder. Unused
