A thermistor thermometer with digital display
P. T. Priestley · Journal of Scientific Instruments · 1963
The object of this note is to describe a relatively simple way of constructing a thermistor thermometer with digital display. In principle a self-balancing servo-potentiometer is utilized to rotate a `Digidial' which indicates, in a digital manner, the angular position of the potentiometer shaft; in practice each digit represents 0.1 degc.