Lens: Dia. 50mm, -200mm Double Concave
Item # 92-7700-09
Double concave lens with a 50mm diameter and -200mm focal length
50mm diameter double concave lens is made of plate glass with a carefully ground and polished optical surface and cleanly ground edges. Focal length of this lens is -200mm.
Products being sold are not toys. They are for Educational / Labratory use only. They are not for use by children 12 and under.