A polished aluminum clamp designed to hold thermometers and other small rods. Fully adjustable with thumbscrews. Jaws hold tubes up to about 1/2" in diameter. Essential for laboratories.
Working model representing the sun, earth, and moon and their relationships.
Learn about hydrogen fuel cells with this incredible kit!
Check out this high-quality gyroscope!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This black scorpion specimen is great for the classroom setting!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.