Knife Switch Demonstrator with 4mm Terminals Science at Home_General Science Supplies this concave glass mirror at

this concave glass mirror at 100mm focal length runs at f/1 for vivid real-image demos and converging-reflection work

paired against zinc

Built for measuring photosynthetic gas exchange

Combines detailed cranial anatomy with a removable life-size brain

Twelve removable organs expose thoracic and abdominal anatomy in a headless torso format

Knife Switch Demonstrator with 4mm Terminals Science at Home_General Science Supplies this concave glass mirror atSingle pole double throw knife switch mounted on a 4mm terminal base, letting students reroute a modular circuit between two branches without touching unmounted components.