sling psychrometer/Moisture Meters/US type Yellow plastic casing and B handle, carrying case package, high accuracy sling psychrometer/Moisture Meters/US typeAspirated Psychrometer 1,Yellow plastic casing and Blue handle, 2,carrying case package, 100%Relative Humidity table enclosed3,Red spirit filled or Mercury filled glass thermometer 4,Range 20/120F or -5/50C5,Brand:QualityWellThe unit is ...