Alnico Bar Magnet Pair, 6" Rod Material_Steel Optically-worked glass double convex lens

Optically-worked glass double convex lens with a 150mm focal length and 1

letting students sweep through resonance and watch amplitude peak when drive matches natural pitch

5 inches of nylon bristles for scrubbing glassware up to 4 inches in diameter

and d2sp3 atoms for hybridization-and-geometry visualization

offered as a safer substitute for the lead-containing PH0112FCB set

Alnico Bar Magnet Pair, 6" Rod Material_Steel Optically-worked glass double convex lensUsed to demonstrate broad pole separation effects, this 6 inch Alnico bar pair extends field lines visibly along the magnet body for full class iron filing demonstrations.