To explore light reflection and refraction properties of concave and convex mirrors, laws of reflection, image formation, the effects of surface curvature on reflection, spherical aberration etc. Each mirror is securely held on a plastic base, diameter of the mirror is 95mm approx.

Clear glass, ground edges.

Cylindrical lenses made of highly polished glass magnifies in only one dimension. These lenses are used in transforming a point image to a line or changing the height of an image without changing its width.

Brass dial head 40 mm in diameter, divided and marked in 100 divisions. Vertical scale of 10-0-10 mm. Fitted on tripod stand, distance between legs 40 mm.