Laser Line Generator, 1 Each

The United Scientific® Laser Line Generator by United Scientific is a handheld optics teaching tool that uses a glass rod in front of a Class 2 laser diode (below 1 mW) to project a visible line rather than a point. The line reaches over a meter, so reflection and refraction through mirrors and lenses are easy to see. A momentary button keeps the laser on only while pressed. Physics teachers use it for ray optics lessons.