Hygro-Thermograph
Measures and records the temperture and the reltive humidity of the ambient atmosphere. Accuracy + 2% rel. F. ( H) , + 3% rel. F. ( K) Recording width 2 x82 mm Ambient temp , H, -35 - 80° C, , K, -35 - 80° C Recording period Clockwork 1/ 7 days hand wound 14/ 31 days hand wound 1/ 7/ 31 days