Description

This inexpensive and lightweight laser pen is
useful for ray optics demonstrations and simple
diffraction work. To help with this you do not have
to keep your finger on the button. Once pressed
the pen will stay on until the button in pressed
again. In addition to this you can make your point
on overhead images with this useful presentation
tool.
Caution: Laser Light. Do not stare into the beam
or view directly with optical instruments.