Resistance Box, Plug Type

For accurate work, in polished wooden box and panel figured in white. Split brass contact blocks hold precision cut, interchangeable plug having moulded black fluted tops. Coils of constantan wire, double silk covered are wound co-efficient. Accuracy + 0.1%.
Range in Ohms Total Ohms No. of Coils
1-50 110 8
1-100 210 9
1-500 1110 12
1-1000 2110 13
1-5000 11110 16
1-10000 21110 17