Great when you let it cool down!
This card is great! I have used plastic cards for years and finally stepped up to this about a month ago. i find that once the card is cold crystals will last much longer allowing you to get a batter view of what the conditions are like!! This is much more durable than it's plastic counterparts when pushing into icy layers, and works well a a knife measurement in your tests. This card will melt crystals if you take it right out of your pack and try to use it. Let it cool down first!!