ID:
856
Maker's Name:
Leeds and Northrup
Where made:
USA
Dimensions:
18 × 28 × 22 cm
Precision potentiometer.
Measures voltages by comparison with a Weston Standard Cell.
Measures current by measuring voltage drop across a standard resistor.
An additional Volts box is required if voltages above 1.6 Volts are to be measured.