Lens holder to hold lenses or mirrors of 50mm dia. Comprised of metal spring clip with a ?V? groove in either side arm, mounted on a stand with a groove across the base to accommodate a meter rule. Lens Dia. 50 mm
Lens holder to hold lenses or mirrors of 50mm dia. Comprised of metal spring clip with a ?V? groove in either side arm, mounted on a stand with a groove across the base to accommodate a meter rule. Lens Dia. 50 mm