Polytherm Hygrometer

This is one solid beauty of a unit. The paperwork that comes with this even says this unit can be used in a laboratory or commercial premises. Simple and clean looking. It works differently than the other hygrometers via a special pretreated fiber unlike other analog hygrometers. As a result, this hygrometer gives a more precise reading and has higher sensitivity. Regarding the name "Polytherm", go figure. Maybe thought up by some engineering dude hallucinating on some potent German brewskis!

Color: Gold rim, white face, black print and dial.
Size: 2.625 in. diameter by 0.75 in. thick.
Construction: Plastic body and face.
Accuracy: Plus/minus 2% in the range of 25 to 100% relative humidity.
Method of Attachment: Velcro.
Other features: Adjustable dial.