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

demonstrating the mechanism behind crankshaft pistons and steering racks

conductors

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

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.