Reflection/refraction tank replace CP34104-00

This product effectively demonstrates the laws of reflection and refraction.  The 16 cm diameter acrylic water tank has a 360 Degree scale and a moveable arm carrying a laser activated by a momentary switch.  The sharp beam of light produced by the laser can be adjusted to pass the center of the scale.  Batteries and activity guide are included. Please Note:  This product emits laser light.  Max. output power1mW.  Wavelength 630-680 nm.  Class II laser product.