Scientific/Probeware

The 4-in-1 Light Source is an excellent source for a variety of optics experiments. A single 10-watt quartz-halogen bulb provides bright, easy-to-see illumination without a lot of heat. By flipping the box to its different sides, it becomes a: Crossed Arrow Object with Metric Scale, Bright Point Source, Three Primary Colors Source, 1, 3 or 5 Ray Source.