Resistance Coils, Shows How Resistance Varies With The Type Of Wire, Length Of Wire, And Diameter Of Wire In Coil In 0.1 To 0.9 Ohms., Each

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Can be used with a wheatstone bridge or ohmmeter.Constantan coils non-inductively wound with double-silk on plastic rod held within a transparent plastic tubetwo terminals; resistance values appear on coil accuracy, 1%wire lengths are in two to one ratio to simplify computations. Five coils are mounted on a base of size 8 x 5 in. And six binding posts facilitate hook-upthe coils are wound as follows :wire swg lengthcopper 22 10 meterscopper 28 10 meterscopper 22 20 meterscopper 28 20 meterscopper nickel 22 10 metersorder infoindividually packed