Compact in size, inexpensive, light weight with low power consumption diode laser is housed in a plastic moulded case. Qualitatively used for ray optics demonstration and simple diffraction work as well as to indicate the points on overhead images and charts. Requires 2 x AA batteries (not supplied) to project visible red spot with a sharply focused beam of wavelength 630-680nm with only 1mw power consumption.
Size: 90x90x42mm (approx.).