This Adjustable Focus Red Laser Pointer allows the user to adjust the diameter of the beam by simply turning the aperture. This Adjustable Focus Red Laser Pointer is for presenters, medical practitioners and trainers.
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
A massive mounted set of 100 rocks and minerals found in the US,
High-quality green laser pointer projects a green dot up to an incredible 2 miles away.
Watch this spaceman fly through the sky!
Get this great introductory chemistry kit for your favorite young scientist!
View the glory of space with this hi-tech telescope set!