Abstract: Temperature-sensitive instruments and methods for producing them are disclosed. The apparatus disclosed comprises a pair of temperature-sensitive sensors which have at least one electrical property, such as resistance, which varies with temperature, and which are in electrical communication with each other, conductors connected to these sensors so that the temperature-sensitive instrument can be employed to provide a temperature reading by determining that electrical property from the conductors, and where the electrical property of each of the sensors has equal and opposite deviations from predetermined values so that the sum of those deviations approximately equals zero. In a preferred embodiment the sensors are coupled in series.