unfortunately, you won't find and accurate analog hygrometer that will survive direct misting. at least not in the pet trade. best bet is a digital with remote probe like you have. outside the pet trade, you may find very high quality hygrometers built for high end humidors. check cigar shops that carry mega dollar humidors. i like the exoterra temp/hygrometer digital combo. it's fairly accurate, at least a lot more accurate that analog types.
any specific reason you prefer analog?