Circular Coil On Base, Coil With 94 Turns Of 1 mm Dia, Mounted On A Plastic Base, And Surrounds A Plastic Sheet On Which Iron Fillings Can Be Placed. Used To Observe Static Magnetic Fields Generated By A Constant Flowing Current,For Demonstration On Static Magnetic Fields.
Knife Switch, Double Pole - Single Throw, Double Pole - Single Throwdurable Plastic Base Knife Switches That Stand Up During Tough Student Use. Poles & Knives Are Made Of Brass For Good Electrical Connections.
Plug Switch - Two Way Three Brass Blocks With 4mm Insulated Terminals With Tapered Plug With A Fluted Top Are Mounted On A Molded Base, With Three Brass Blocks, Each With A 4 mm Insulated Terminals And Two Standard Tapered Plugs To Fit The Two Holes Between The Blocks.