Eisco Labs Triple Parallel Plastic Pulley - 50mm Physics Experiment Gear For Classroom

About This Product

This Eisco Labs triple pulley is exactly what you need for physics demonstrations - it's built tough enough to handle classroom use but precise enough for accurate experiments. The three parallel pulleys each measure 50mm in diameter and rotate smoothly on their axles. What's cool is how the steel frame gives it stability while the plastic wheels reduce friction for clearer demonstrations of mechanical principles. I've used this with weights up to 30 pounds and it handles them without any issues. The hooks on both ends make it easy to set up in different configurations - you can demonstrate simple mechanical advantage or more complex pulley systems. For teachers, this is one of those workhorse pieces of lab equipment that you'll use year after year. The size is perfect for desktop experiments - about 8.9cm long with a 4mm inner gap - substantial enough to be durable but not so big that it's cumbersome. Students can really see how pulleys reduce the effort needed to lift weights, which makes those physics concepts much more tangible than just reading about them. The quality is typical Eisco - well-made, no sharp edges, and designed specifically for educational use. Whether you're teaching basic mechanics or more advanced physics concepts, this triple pulley setup makes the learning experience much more engaging. It's become one of those go-to pieces in my physics kit that gets used constantly because it just works reliably every time. The value for money is excellent considering how many different experiments you can demonstrate with this single piece of equipment.