Lens Holder for 50mm Diameter Lens or Mirror

This lens holder is designed to hold lenses or mirrors with a 50mm diameter. The holder consists of a metal spring clip with V-grooves on either side arm, mounted on a stand with a groove across the base to accommodate a meter rule. The meter rule slot allows the holder to slide along a ruler for distance measurements in optics experiments. Suitable for physics classrooms studying lenses, mirrors, focal length, and image formation.