A handy little thermometer to have on your parka even though it only went down to -20F. The wind chill chart on the back was a particularly helpful reminder for those who tended to underestimate the effects of the wind.
This chart used the wind chill numbers that were in effect before Nov. 2001. A new wind chill formula was adopted in Nov 2001 based on additional studies. It tended to increase the wind chill effect at lower wind speeds and decrease it at higher wind speeds.
Length – 2″ [LNM]
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