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Apogee Instruments MQ-200 Quantum Separate Sensor with Handheld Meter

From $446.75

Digital Hygro-Thermometer

$38.23

Durac Digital Max-Min Thermometer

$52.60

HOBO UX120 Plug Load Data Logger

$285.56

Min-Max Dial Type Thermometer

$22.36

Sling Psychrometer, Celsius

From $71.36

Student Psychrometer Kit

$9.39