context delivery service http://reich-germany.de/airmaster-krai-climas...

abstracting service: Feuchtestrumpf -> Feuchtstrumpf

rooting around in Wiki service:
Wet-bulb temperature is measured using a thermometer that has its bulb wrapped in cloth—called a sock—that is kept wet with distilled water via wicking action. Such an instrument is called a wet-bulb thermometer. A widely used device for measuring wet and dry bulb temperature is a sling psychrometer, which consists of a pair of mercury bulb thermometers, one with a wet "sock" to measure the wet-bulb temperature and the other with the bulb exposed and dry for the dry-bulb temperature. The thermometers are attached to a swivelling handle which allows them to be whirled around so that water evaporates from the sock and cools the wet bulb until it reaches thermal equilibrium
cf https://en.wikipedia.org/wiki/Wet-bulb_temperature

"sock" or "wick" are both used

Thanks!