Plug-Type Brass Resistance Box, Model A Capacity_500mL Precision-cut interchangeable plugs in split

Precision-cut interchangeable plugs in split brass contact blocks select between constantan-wire decades

Spanning a full year of optics coursework

Miniature desktop torso with 12 removable parts includes a dissectable head and brain for compact classroom anatomy and biology teaching

5A single-phase rheostat with cover-protected constantan winding on a 200x56mm tube and 4mm safety sockets

illustrating the Lorentz force as current crossing the magnetic field sets a low-friction wheel in motion

Plug-Type Brass Resistance Box, Model A Capacity_500mL Precision-cut interchangeable plugs in splitUsed to introduce known resistance into a circuit by removing brass plugs from sealed coil contacts, this plug type resistance box lets students see the switching action of each decade.