Lenses

Double concave. Optically worked glass with ground edges. Dimensions (Dia.): 38 mm.

Double concave. Optically worked glass with ground edges. Dimensions (Dia.): 50 mm.

Double convex. Optically worked glass with ground edges. Dimensions (Dia.): 38 mm.

Double convex. Optically worked glass with ground edges. Dimensions (Dia.): 50 mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Wood with 'V' slot to hold lenses up to 80 mm diameter.

Plastic cylindrical lenses, W45 x FL100 mm for Ray Box OP11808.

Metal spring clip holder with grooves to hold 50 mm round lenses or mirrors, mounted on base with slot cut out to accommodate metre or half metre rule.