Reddit reviews Oakton WD-37250-20 Acrylic Long Cycle Hygrothermograph, 5.58" Diameter x 13.25" Width x 11.5" Height
We found 1 Reddit comments about Oakton WD-37250-20 Acrylic Long Cycle Hygrothermograph, 5.58" Diameter x 13.25" Width x 11.5" Height. Here are the top ones, ranked by their Reddit score.
Selectable 1-month or 3-month chart rotation for humidity and temperature recordingsQuartz-controlled drive mechanism has consistent drum rotation throughout battery lifeAged bimetallic strip temperature sensor for accurate pressure readingsProtective acrylic cover locks into place for securityFlashing LED to indicate operation of drum rotation
IIRC these are evironment monitors, tracking temperature and humidity readings in the halls. Most often you'll see these next to wooden sculptures, older paintings and other exhibits threatened by moisture.
The ticking sound is just the readout paper roll scrolling.
EDIT: the formal term is literally hygrothermograph, aka "temperature and humidity measurement device"
You can buy one of your own!
https://www.amazon.com/Oakton-WD-37250-20-Acrylic-Hygrothermograph-Diameter/dp/B004G8PXQS