Vintage Weksler Pocket Sling Psychrometer Wet Bulb Thermometer Humidity Calculator hotsell

Two 5 1/2” mercury filled lens front thermometers attached to metal back with handle for whirling.

Handle folds out of way when not in use.

Supplied with wick and pocket case.

Range: 20 to 110°F in 1° divs.

ships immediately hotsell