Eisco Labs Table Top Ray Optics Kit

Contains (2) 12V/24W lamps which require separate power supply Contains: 1 Pair of housing shields, 2 combined single and triple slit plates, 2 multiple slit combs, 2 holders for combs and slit plates, 4 wooden light barriers, 4 Plano cylindrical lenses + 7 D, 2 Plano cylindrical lenses +10 D, 2 Plano cylindrical lenses +17D, 2 Plano cylindrical lenses -17 D Great, economic way to construct geometrical optics on any table top. Contains all necessary hardware to do a variety of experiments No Instructions included