Thermohygrograph Temperature range -10 to 45 deg.0 to 100%relative humidity.Accuracy 1deg & 1%rh.One rotation of clock drum is completed within week(daily version also available)and graph of atmospheric temperature & pressure is plotted.Drum driven by quartz moment.Temp sensor:bimetallic strip.Humidity sensor:human hair. Dimensions:300mm x 180mm. Weight:5kg
