The fact is that home hygrometers are always difficult to understand how accurate they are. In my air-conditioned home in Virginia, this is typically 56-60% relative humidity. The tiny, very cheap ones that we all put in our cannabis jars range from 63% to 68%. I find this too much, so I compare it to this one, which I think is the most accurate.
Triangle Group TR918 225/45 R18 95V summer
61 Review
π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
3 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review
Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review