Reading Magnifier, 75mm, 20cm Focal Length Pack Size_6 Two independent output channels on

Two independent output channels on this compact AC/DC power supply deliver six selectable voltages up to 12V at 500 mA each

supplying an inert electrode that conducts current without contributing its own ions to the cell reaction

sized as a class-pack for reflection

and 4mm wire terminals

providing dense uniform spheres for ramp-and-collision experiments where a heavier projectile is needed than the plastic marbles can provide

Reading Magnifier, 75mm, 20cm Focal Length Pack Size_6 Two independent output channels onChrome plated 75mm reading magnifier with a 20cm focal length, the wide aperture and longer focal distance suiting whole page reading and broader image formation experiments.