Description:
This is a collection of miscellaneous lenses. It includes:
3 oval spectacle lenses marked with their powers
3 round spectacle lenses marked with their powers
4 concave lenses
1 bi-convex lens
1 small condensing lens
1 cemented achromatic doublet
1 lens cut into the shape of a rectangle.
Also in the assortment are a square plate of greenish glass and a small circular piece of glass.