The Whirling Hygrometer or sling pyschrometer is an established, well-known method for determining the relative humidity and dew point. The sling pyschrometer is used by paint shops to determine if there is any moisture on steel to prior to painting, as well as, and an economical choice for educators.

Our sling psychrometers allow you to obtain fast and accurate humidity readings anywhere by comparing the reading of the wet and dry bulb thermometers on the enclosed humidity chart. Eliminates the hazard of splattering mercury by using a safe and easy to read red liquid. The thermometers are recessed into a protective plastic mounting. The mounting also contains a water reservoir eliminating the need to constantly re-wet the wick. Comes with a carrying case and plastic humidity chart.

Dimensions: 9⅛” × 2″ × ⅝” (232 × 51 × 16 mm)
Weight: 7.4 oz (210 g)

Comparisons

Relative Humidity (RH) Meters Comparison Chart
Product:	RH / Temp Pen 800012	Smartphone RH/Temp 800014	Sling Psychrometer -5 to 50°C 736700	Sling Psychrometer 20 to 120°F 736710	Mini Environ Quality Meter 850070	Psychrometer/ Anemometer 840034	Datalogging Indoor Air Quality Meter 800050	Indoor Air Quality Meter 800046	RH / Temp SD Card Logger 800021	WBGT SD Card Logger 800037
Price:	$36	$60	$91	$91	$160	$230	$241	$354	$319	$471
Ambient Temp:
RH:
Min-Max:
Hold:
Dew Pt:
Wet Bulb Temp:
Air Speed:
Surface Temp:
Dry Bulb Temp:
Data- logging:
Ambient Light:
CO2:
BTU:
Air Volume:
Hi/Lo Alarm: