Industrial Kelvin Double Bridge

Standard Resistance : There are 10 coils of .01 ohm each arranged on a rotary dial plus a circular slide wire of total resistance .01 ohm and 500 sub-divisions is equal to .00002ohms on the normal range. Multiplying Ratios : This bridge is very suitable for the use of wires & cable manufacturers. It is being extensively used for finding the resistance of transformer winding, contact resistance of relays etc. A single rotary switch furnishes 5 multiplying ratios of x100, x10, ×1, ×.01 and 0.1.