US$ 12.99
the flywheel light enough to drive by breath for hands-on reciprocating-engine study
this six-metal density cube set of brass
this resistor module on a demonstration base with 4mm plug connections drops into series with bulbs and LEDs in student circuits
Polished 8cm brass sphere on an ebonite-insulated metal base
1100-turn copper coil on a bobbin sized for a double C-core
Fish Skeleton Anatomical Model Material_Copper the flywheel light enough toFish skeleton model demonstrates vertebral column, fin structure, skull anatomy, and gill arches for comparative vertebrate anatomy teaching.
US$ 12.99
US$ 155.50
US$ 10.77
US$ 99.99
US$ 36.99
US$ 39.99
US$ 213.50
US$ 25.00
US$ 113.95