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Bacharach Sling Psychrometer
Bacharach Sling Psychrometer
Easy to use
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The compact Bacharach Sling Psychrometer accurately determines percent of relative humidity without the necessity of consuting complex tables. There is no need to wet the wick each time a reading is taken; the Sling Psychrometer contains a slide rule calculator which correlates wet and dry bulb thermometer indications for direct reading of relative humidity. When not in use, the rugged case telescopes into the handle for protection. Red Spirit filled glass 25F - 120F thermometers in #12-7012. Mercury filled available under PN 12-7011.