500mm Connecting Lead, 4mm Plug, Model C Rod Material_Stainless Steel this green LED on a

this green LED on a demonstration base with 4mm plug connections lights up when current flows in the correct direction

Painted red and blue along their lengths to mark north and south poles

and three low-friction nylon wheels for straight-line momentum experiments

Turning the hand crank walks students through every stage of the 2-stroke gasoline firing cycle on a 14-inch model

Selected through four rotary-switch decades from 0 to 11

500mm Connecting Lead, 4mm Plug, Model C Rod Material_Stainless Steel this green LED on aUsed to bridge a 4mm socket instrument to a bare component test point on the bench, this 500mm black lead pairs a 4mm plug at one end with a crocodile clip at the other.