Steel Sling Psychrometer for Earth science and meteorology contains two non-mercuric-filled thermometers. Thermometers are 24 cm long and have a range of –20 to 120 F.
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Two non-mercuric-filled thermometers, one with a cotton wick attached to its bulb, are securely attached to a stainless steel metal frame. The attached wooden swivel handle allows the user to freely swing the psychrometer. Thermometers are 24 cm long and have a range of –20 to 120 ºF.