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Spinning-Whirling Psychrometer-Hygrometer, Wet & Dry Bulb Thermometer - $10 (Boston and Northward)
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aluminum frame is about 11" long,
spinning 3 1/2" inch long plastic screw driver style handle pivots 90 degrees,
working - see glass tube pictures showing:
thermometer at 40 then 64.5 degrees Fahrenheit, ( full instrument range is 0F to 110F ),
hygrometer at 40 then 63 relative humidity ( full instrument range is 10 to 110 ),
undamaged.
Collector's Item - Great Gift for a weather scientist!
$10. - Can Safely Ship.
If you reply to this listing Don't Forget to CHECK YOUR SPAM FOLDER along with Your Inbox for my response!
Will meet serious buyer at mutually convenient location.