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Period laboratory 4 decade electrical resistance box or audio controller

Period laboratory 4 decade electrical resistance box or audio controller

Decade resistance boxes like this are used for selecting any resitance value from 1 ohm to 9999 ohms by turning the knobs. Used as teaching aids or for development work in a lab

Prop ID: 3983

Width: 29 cm

Height: 12 cm

Depth: 12 cm

Age: 1950s

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