Fischer 122.01 - synthetisches Haar-Hygrometer - 103mm Luftfeuchtigkeitsmesser aus Edelstahl Made in Germany - silber : Amazon.de: Home & Kitchen
File:Haar-Hygrometer.jpg - Wikimedia Commons
Hair Hygrometer – Northwest Avian Specialty
Hair hygrometer ø 103 mm - Fischer
Fischer: 1222-01, thermo-hygrometer for living climate, with indication of ideal climate values dependent on season and temperature, coloured areas for observing health room climate
Fischer: 122, hair hygrometer synthetic for indoor use or low humidity