1-1000Ω Plug-Type Brass Resistance Box, 13 Coils Item Type_Spoon Three-hundred-millimeter black 2mm-stackable lead with

Three-hundred-millimeter black 2mm-stackable lead with nickel-plated split-hollow pins on both ends

the wider bore accepting full-size bar magnets while AC current drives the alternating field that rotates domains for demagnetization

and an ignition light that fires on compression

sized to handle both wall-supply and battery-circuit current measurements

Exposes every moving part of a two-pole armature rotating between permanent magnets on an open 4-inch plastic base

1-1000Ω Plug-Type Brass Resistance Box, 13 Coils Item Type_Spoon Three-hundred-millimeter black 2mm-stackable lead withThirteen coil plug type resistance box covering 1 ohm to 1000 ohms with 2110 ohms total at plus or minus 0. 1% accuracy on double silk covered constantan windings, reference grade for bridge work.