187-3783, Rotronic Instruments, Rotronic Instruments Hygropalm HP32 set Handheld Hygrometer, ±0.8 %RH Accuracy, +200°C Max, 100%RH Max Rotronic Instruments Hygropalm HP32 set Handheld Hygrometer, ±0.8 %RH Accuracy, +200°C Max, 100%RH Max