A set of three 635nm, <5mW Red LASER Blox™ has more versatility and flexabiltiy than three red laser pointers could ever hope to. This versatile and economical combination allows you to stack three red LASER Blox™ magnetically so you and your students can construct a ray box to easily study ray optics. Shine 3 beams through various lenses and mediums to easily view and measure focal length and then separate them so each student can use a single LASER Blox™ for another activity. Insert the line generator to see the beam on the viewing surface - remove it for a point source.
Comes with durable foam case, AAA batteries and a line generating lens for all three units.