Overhead Projector, 250 x 250mm Platform Diameter_250mm Universal silicon collet is provided

Universal silicon collet is provided to accept firmly all standard pipettes up to 50 ml comfortable grip

Corrosion-resistant copper British-pattern rain gauge with a weather-grade body

5mm copper wire on a clear acrylic base support side-by-side comparison of how loop count multiplies the on-axis magnetic field at fixed current

demonstrating the mechanism behind crankshaft pistons and steering racks

Overhead Projector, 250 x 250mm Platform Diameter_250mm Universal silicon collet is providedClassroom overhead projector with 250 x 250mm transparency platform projects handwritten and printed materials onto a wall or screen for group instruction.