The BCA Crystal Card is a polycarbonate card for looking at snow crystals in the pit. It has 1 mm and 3 mm grids, snow pit instructions, and a slope index on the back.

Features

• Polycarbonate: absorbs less sun and does not pull heat from your hand, so crystals last longer
• Measuring grids: 1 mm and 3 mm
• Printed reference: snow pit basics and a slope index for reading angles off a topo map

Specs

• Size: 6 x 4 in.
• Weight: 35 g
• Material: polycarbonate