Ray Optics Box

Black finish metal box, with 12V 24W straight filament lamp. The lamp holder, with 1m of twin flex, is mounted in sliding metal bridge piece which provides sufficient adjustment to covering, parallel or diverging rays. The enamelled steel body has slots to support a cylindrical lens & a triple slit screen. Extra slots are provided for filters. Dimensions 182x61x115mm. The box is supplied complete with lamp & triple slit but without lenses or filters.