6-Piece Acrylic Lens Set, 38mm (Convex, Concave, Plano, Meniscus) Gifts_Kitchen sized for fine-pitch breadboard work

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

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

Adjustable locking hook positions items 110 mm from the support rod on this suspension clamp

Conversion chart for SWG/AWG/Inches:

this decade box selects cascaded values for RC-time-constant

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