Historical Fragment
The following is an introduction to some of the instruments that have been decommissioned but are still being kept. They once played an important role in upper air observation or the operations of the King's Park Meteorological Station and have high historical value.
![Theodolite with tripod](/common/wxinfo/aws/100_Upper_Air/images/Theodlite_with_tripod.png)
Theodolite with tripod
![Balloon fillers](/common/wxinfo/aws/100_Upper_Air/images/Balloon_Fillers.png)
Balloon fillers
![Radiosonde ground check set](/common/wxinfo/aws/100_Upper_Air/images/radiosonde_ground_check_set.png)
Radiosonde ground check set
![Sling psychrometer](/common/wxinfo/aws/100_Upper_Air/images/Handle_Thermometer.png)
Sling psychrometer
![Humidity slide rule](/common/wxinfo/aws/100_Upper_Air/images/Humidity_slide_rule.png)
Humidity slide rule
![Radiosondes](/common/wxinfo/aws/100_Upper_Air/images/radiosondes.png)
Radiosonde
![Manual Upper-Air Sounding System](/common/wxinfo/aws/100_Upper_Air/images/manualUpperAirSoundingSystem.png)
Manual Upper Air Sounding System
![Mercury Kew Barometer](/common/wxinfo/aws/100_Upper_Air/images/mercuryKewBarometer.png)
Mercury Kew Barometer
![Bimetallic actinograph](/common/wxinfo/aws/100_Upper_Air/images/bimetallicActinograph.png)
Bimetallic actinograph
![Campbell-Stokes Sunshine Recorder](/common/wxinfo/aws/100_Upper_Air/images/campbellStokesSunshineRecorder.png)
Campbell-Stokes Sunshine Recorder
![Ångström Compensation Pyheliometer](/common/wxinfo/aws/100_Upper_Air/images/angstromCompensationPyheliometer.png)
Ångström Compensation Pyheliometer