This LED ray box uses LED light is battery operated, therefore the body of the box will not heat up with high power bulbs. A front opening provides 7 grooves for accessories and lenses which have been designed so that when used with a biconvex cylindrical lens or 75mm focal length, divergent or convergent rays are obtained through the slit plate.
 
This ray box has three openings, two of which can be used simultaneously by two sets of students, as there are two side openings which each have two slots for accommodating blanking plates.
Supplied with 2 meter of flex and two 4mm plugs, 12V, 24W B15 bulb, bulb holder, slit plate, aluminium blanking plates and working instructions. Ages 10+ yearsEach product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.