What´s the temperature?

I recently made a trade that got me this rare wirbulator made by Milbar.
It´s not only a bug deflector, it´s also has thermometer in the midle so that you can see what the temperature is outside while you are driving.
I´ve wanted one these since I first saw one at a show in Belgium back in 1997, so I´m pretty pleased that I finnaly got it!
By the way if you look closely at the pictures, you can see it´s still pretty cold here in Demark