For use as accurate Inductance. These units employ high stability Inductance. The individual decades are parallel connected, each having switch position of 0 to 10 and are mounted in line with 4mm socket terminals linked to the ends of the chain and to each inter decade junction. A further earth terminal connect to the metal case. The top panels is clearly marked with the internal connection arrangement and maximum safe current capacity of each decade and the overall tolerance. Housed in robust metal case. Dial: Single Dial