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Pocket Sling Psychrometer
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1330J Pocket Sling Psychrometer


  • Sling Psychrometer for determining atmospheric humidity by the reading of two thermometers.
  • Measures the wet and dry bulb temperatures of the surrounding air and permits conversion of the readings to a relative humidity percentage on the "slide rule" scale built into the case.
  • Range 20°F to 120°F and 10 to 100% RH.
  • Black plastic casing with white printing.
  • Mercury filled.
  • 6 wicks included.
  • Packed in an individual box.
  • Model 97S231J1: 6 replacement wicks for model 1330J.