This highly detailed engine model is perfect for any technology, physics or general science class! Four-stroke operation is demonstrated by the gear-driven timing mechanisms, valves, ignition systems and more. DC power input is available to power a lamp which represents the spark or glow plug ignition. This model is the gasoline version. Made from a high-density plastic that will withstand continual use.
This glass Erlenmeyer mug makes an excellent gift!
Build your very own smart robot!
Build 14 assorted solar robots, some of which can travel over water!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
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!