Accuracy :+0.01% or 1/5th division of the slide wire whichever is greater.
General :Designed for work of extreme precision.Voltage Dials :1st dial 17x0.1v=1.7v 2nddial (slidewire 100 x 0.001 v = 0.1 v Total= 1.8 v The range of slidewire is -0.001 v to + 0.101 volt.Each main division is further sub-divided into 5 equal parts so as to give the least count as 0.0002 volts.Range Multiplier :of 1/10 gives with least count as 0.000002 volts.Range Measurement :0.000002 volts to 1.8 volts on 2 ranges.Independent Standardising Circuit :An auxilary dial calibrated from 1.0170 v to 1.0190 v is provided to compensate for the temperature variations of standard cell voltage. Standardisation is independent of setting of voltage dials and range multiplier used.Rheostats :Coarse & fine rheostats are provided for standardising the currentPotentiometric Current :It is of the order of 11 mAmperes resistance 1 ohms / volt.Test Circuits :There are 3 test circuits selected by a selector switch.Resistance Coil :Manganin coils are used.Battery Required :2 volts freshly charged battery.
with an additional range multiplier of 1/100 so as to give the least count as 0.000002 volt.