Simple Switch Demonstrator with 4mm Terminals Capacity_25mL this Alnico U-shape carries 45mm

this Alnico U-shape carries 45mm pole spacing for compact-bench field demonstrations and motor-effect setups

this plant cell model shows organelle ultrastructure and cell-wall layering for upper-level cell biology teaching

one fitted with an exploder piston for momentum and action-reaction investigations

adjustable via motor voltage to mimic temperature and float weight to mimic pressure

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Simple Switch Demonstrator with 4mm Terminals Capacity_25mL this Alnico U-shape carries 45mmSingle open or closed switch on a 4mm terminal base, providing the cleanest hand operated way to make and break a circuit during early electricity instruction with stackable modules.