BCA Polycarbonate Snow Crystal Card

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BCA Polycarbonate Snow Crystal Card. The lexan crystal card provides a surface to analyze/classify snow grains and also has a slope index, which allows you to determine slope angles from a topographical map. Ideal for sunnier climates, the lexan crystal card does not absorb as much radiation as the aluminum crystal card, which allows you to study snow crystals longer and more accurately.





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