Ok, I did the salt test twice with my analog and digital hygrometers. The first time they read a little high, so I did it again for 24 hours. The digital read 78 and the analog also read 78. The digital has always been 2 or 3 degrees high, but I thought the analog one was correct. I turned the analog one down by 3 degrees and put them both in my humidor. It has been a few days and now the digital reads 74 and the analog 68. I have a small desktop humidor with a tube of beads and a half full shot glass in it. I think the salt test ran 3 degrees to high and the analog was correct to begin with. That would put the humidor at 71% humidity. Anybody see any other possibilities?