Folding Magnifier with 25mm Lens, 4x Lab Supplies_Stopwatches & Timers totaling 250 grams for suspension

totaling 250 grams for suspension from pulleys

holding twelve tubes up to 22 mm diameter for classroom and professional bench setups

Pith balls suspended both inside and outside a charged metal cylinder make visible proof that electrostatic charge resides only on the outer surface of a conductor

the gentler curvature softening divergence while still producing reduced virtual reflections

Folding Magnifier with 25mm Lens, 4x Lab Supplies_Stopwatches & Timers totaling 250 grams for suspensionSingle lens folding housing magnifier with a 25mm lens delivering 4x magnification, lens tucking inward when closed to resist scratches during classroom, field, and desktop handling.