for a guitar case? Its small and has pretty good reviews (scroll down) http://www.adorini.com/all_accessories-en.html
That one was my first choice if I couldn't find one that I liked that was analog. Just felt this was one thing that I'd use that didn't require batteries.geoguy said:My reply may be too late, but I bought several of these: Caliber III hygrometer
Same price as Frono's suggestion, about $16 apiece, & readily available from Amazon. In addition to displaying current temp & relative humidity, they also record max/min temp & max/min relative humidity (since it was last reset).
markus said:I think accuracy does't matter too much here.
You can calibrate those dial hygrometers (more or less):fronobulax said:… hygrometers that allow to calibrate them.
Thanks for the link Marcusmarkus said:You can calibrate those dial hygrometers (more or less):fronobulax said:… hygrometers that allow to calibrate them.
Two common methods
• the damp cloth method or
• the table salt method
are described here.
Good and accurate enough for keeping our guitars healthy!
Markus