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1. SP341 Sub-mini K type Thermocouple Thermometer : Measure temperature. 2. SP555 Vane Anemometer : Measure air flow velocity. 3. SP565 Hot wire Anemometer : Measure air flow velocity. 4. SP620 Dual Manometer : Measure dual input differential pressure. 5. SP1000 Ambient Air Direct CO2 Meter : Measure ambient CO2. 6. SP700 CO Meter : Measure CO. 7. SP597 Thermo hygrometer : Measure temperature and humidity. 8. SP323 Clamp thermometer : Measure temperature. 9. SP670 High pressure meter : Measure high pressure.