Standard pressure gauges and thermometers generally cope with ambient temperatures down to -40 °C. But what must be the features of a mechanical measuring instrument that works perfectly well in polar climates with even lower temperatures? This can be explained using the WIKA POLARgauge® as an example. This product family has been designed specifically for measurement at extremely low ambient temperatures down to -70 °C. The instruments are mainly used in crude oil and natural gas processing; for example, in the local pressure and temperature monitoring of pumping stations and pipelines.