Decade Resistance Unit Age 4-5 Conforms to current European safety

Conforms to current European safety standards

They can be used on grass

Knot a problem

The Philip Harris formula model sives student a simple

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Decade Resistance Unit Age 4-5 Conforms to current European safetyFor use as an accurate potential divider, ratio arm etc. This unit employs high stability metal film resistance elements having superior characteristics to traditional wire wound coils. It is equally suitable for a. c. or d. c. use. The individual decades are series connected, each having switched positions of 0 to 9, and are mounted in line with 4mm socket terminals linked to the ends of the chain. The top panel is clearly marked with the resistance