6-Piece Acrylic Lens Set, 38mm (Convex, Concave, Plano, Meniscus) Gifts_Kitchen 5 inches of cording

5 inches of cording

Half-wood-half-metal 200 by 30mm cylinder demonstrating thermal-conductivity differences through a wrapped paper that scorches over wood but stays uncharred over metal in flame

zero-offset rod

Demonstrates electromagnetic switching on a base with 4mm plug connections

sized for fine-pitch breadboard work where 4mm hardware is too large for the apparatus

6-Piece Acrylic Lens Set, 38mm (Convex, Concave, Plano, Meniscus) Gifts_Kitchen 5 inches of cordingCompact 38mm acrylic six piece lens set covering convex, concave, plano convex, converging and diverging meniscus, and plano concave geometries for safer student station optics.