Fischer German Sauna Gauge – Black Dial 160mm (Temperature & Humidity)Engineered for the Perfect Sauna Every. Single. Time. Lets get one thing straight. You dont go to a sauna to guess the temperature. You go to escape chaos, sweat out stress, and emerge a glowing, regenerated human being. But that only works if the heat and humidity are exactly right. And this this precision made instrument from Fischer Germany is your secret weapon. The Problem: Most people just sit and hope. Too hot? You overcook. Too cold? You might