Anybody ever tried this?.............I'm curious:
http://www.stogieguys.com/2006/07/stogie-tip-salt-calibration-test.html
http://exoticpets.about.com/od/herpresources/ss/hygrometer_3.htm
http://www.humidor-guide.com/hygrometer-calibrating-4-1.php3
http://www.stogieguys.com/2006/07/stogie-tip-salt-calibration-test.html
http://exoticpets.about.com/od/herpresources/ss/hygrometer_3.htm
http://www.humidor-guide.com/hygrometer-calibrating-4-1.php3