This advanced ripple tank comes complete with all accessories needed for wave investigations: there is no need for a separate overhead projector. It includes an electronic strobe and control as well as a Wave Generator unit. There is also an in-built projection screen for easy viewing of wave formations.The frame is made of reinforced plastic and with foam beaches (to negate reflections). There is a mirror which can be mounted at 45 degrees to project the ripples onto a translucent screen on one side of the unit. Intense illumination by a strong light source which is synchronized with the wave generator helps students to observe the wave patterns on a workgroup table.The complete set comprises of:Vibration GeneratorRipple TankWave Monitor unitProjection MirrorProjection ScreenFooters with adjustment screwsWave DippersPerspex ObjectsLever arm and supportThe Ripple Tank includes a comprehensive assembly and information booklet to assist with teaching the topic of Waves.Dimensions (approx.):Ripple Tank: 32 x 38cmMirror: 33 x 40cmScreen: 33 x 30cm