This 50g calibration weight is perfect for general laboratory, commercial or classroom use. You can use it to calibrate digital scales that require 50g of weight. Clearly marked for easy storage.
Infiniview comes with a 3.5" LCD screen and rechargeable Lithium Ion battery that will last up to 2 hours in the field.
Explore the wonders of wind power with this amazing kit!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Build your own windmill generator kit by recycling a plastic bottle!
Learn all about the science of light, optics and visual perception with this wonderful kit!
An ancient toy featuring optical illusion and hands-on fun that never grows old!