4-Step Differential Metal Pulley, 20/30/40/60mm Type_Tall Form configured to contrast eddy-current damping

configured to contrast eddy-current damping in continuous versus interrupted conductors

each one rotating to follow the local field whenever a magnet is placed beneath the plate or alongside it

sized for high-turn-count windings where each turn adds little diameter to the coil core

Compact 2mm-plug connecting lead in the small-scale lead family

and reactive-metal electrolysis behavior

4-Step Differential Metal Pulley, 20/30/40/60mm Type_Tall Form configured to contrast eddy-current dampingFour step differential pulley with 20, 30, 40, and 60mm sheaves on a 4 inch mounting rod, letting students compare force ratios across four different radii in a single assembly.