A ventilated lamp house having an open front with extended sides finned externally for heat dissipation and vertical internal grooves to accomdate a slit plate and cylindrical lens. It has a light source comprising a 12 volts lamps in a holder with one meter of twin flex having banana plugs. Complete with metal plate having single and triple slits and whitened on one side and other side black matt. Without lens.

A set of optical apparatus for all types of optical experiment involving reflection, refraction and colour mixing. The principal component is a robust light box finished in Matt black with a 12V 36W S.B.C. axial filament lamp with 0.75m of twin flex. One end of the box has a cylindrical convex lens in an adjustable sliding mount which allows a parallel, convergent or divergent beam to be produced. The other end of the box has a triple aperture system for colour mixing experiments, the lateral apertures being provided with adjustable hinged mirrors. All apertures in the box are provided with vertical channels to hold slit plates and/or colour filters.

Optical Accessories included :-
Perspex Blocks(Prism):- 1 rectangular, 1 semi-circular, 1triangular prism 60°x60°x60°,1triangular prism 90°x60°x30°, 1 triangular prism 90°x45°x45°.

Cylindrical Perspex lenses :- 1 double concave, 1 double convex(both with the same radius curvature)1 thick double convex.

Mirror :- 1 plane glass(mounted on stand).

Black Plastic Slit Plates :- 1 with three narrow slits and one narrow slit, 1 with four narrow slits and one wide slit.

Set of Eight Colour Filters :- Primary red, primary green, primary blue, cyan, violet, yellow, orange, magenta.

Set of Eight Coloured Cards :- Red, green, blue, violet, orange, cyan, yellow, pink.
The set is supplied complete with a spare lamp. Dimensions of light box 170x90x55mm.