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                      |  | ABH-4224 |  | ABH-4225 |  | AH-4223 |  | AM-4220 |   
                      | Cup type anemometer,
 air velocity,
 barometer,
 humidity, temp.
 | Anemometer, air velocity,
 barometer,
 humidity, temp.
 
 | Anemometer, air velocity,
 humidity, temp.
 | Cup type anemometer,
 air velocity,
 water resistance
 
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                      |  | AM-4221 |  | AM-4222 |  | PCD-431 |  | PCD-432 |   
                      | Cup type anemometer,
 air velocity, temp.
 water resistance
 | Anemometer, air velocity,
 temp.
 
 | Conductivity, 2 ranges, temp.,
 water resistance
 | Conductivity, 2 ranges, temp.,
 separate probe,
 water resistan
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                      |  |   
                      |  |  |  |  |  |  |  |  |  |   
                      |  | PDO-519 |  | PDO-520 |  | PH-220 |  | PH-220S |   
                      | Oxygen meter, termperature,
 water resistance
 | Oxygen meter, temperature,
 separate probe
 | pH meter, separate probe,
 water proof,
 reverse display
 | Soil pH meter, water proof,
 reverse display
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