Title: At Least The Thermometer Worked...
Review: Maybe this was was a defective unit but trying to calibrate the hygrometer was just that - trying. One click of the adjustment knob would yield anywhere from a 4-8 degrees variation. Maybe I'm being picky but using the salt method the closest I got was 73 degrees. Compared with 2 other digital thermometers, though the temperature was dead on.
Is this product review negative?