Laser Pen, Red Manufacturer, Suppliers and Exporter in India
Product Code : JLI-PLE-11291
To help with this you do not have to keep your finger on the button.
This inexpensive and lightweight laser pen is useful for ray optics demonstrations and simple diffraction work.
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.
Power: 0.5 milliwatts