Greisinger-GTH-200-Air-Precision-Room-Thermometer-Greisinger-GTH-200-AIR-P-The-Greisinger-GTH-200-is-a-High-Precision-Indoor-Air-Thermometer-that-measures-the-temperature-of-ambient-air-The-measurements-uses-a-Pt 1000-precision-sensor-located-in-the-probe-tube-&-has-to-be-protected-from-any-dirt-The-open-probe-design-&-the-precise-sensor-ensure-fastest-temperature-measurements-With-the-GTH-200-a-comfortable-&-practical-one-handed-operation-is-possible-P-P-Ideal-for-Calibration