These superior quality unmounted Double Convex Lenses with ground edges are useful for teaching a variety of optical principles.
The Magnesium Ribbon is a roll of Magnesium Ribbon 99% Magnesium, 1% Zinc and Lead.
These Borosilicate Glass Cylinders come with removeable stands for added stability and a bumper guard to prevent breaks.
These Borosilicate Glass Cylinders come with removable stands for added stability and a bumper guard to prevent breaks.
