Capacitor Box, using 1 rotary dial with 12 steps. Various capacitors are selected one by one (not added in the traditional decade manner). Useful for general purpose electronic work. Smallest value is 220pF and the largest value is 1.0uF. Maximum voltage 250V.DC. or 150V.AC. Accuracy is typically +/- 5%. Connection by 4mm spin free terminals with extra terminal for earthing the housing if required.