Jumps or other inconsistencies indicate that the azimuth potentiometer has bad or worn spots.
Wires are of two uniaxial load cells and a string potentiometer.
Connect the potentiometer to an appropriate thermocouple and insert the thermocouple in a beaker of boiling water.
British Dictionary definitions for potentiometer
an instrument for determining a potential difference or electromotive force by measuring the fraction of it that balances a standard electromotive force
a device with three terminals, two of which are connected to a resistance wire and the third to a brush moving along the wire, so that a variable potential can be tapped off: used in electronic circuits, esp as a volume control