The Brooks-Range Snow Grid Card provides an expansive base with laser etched 1 mm, 2 mm, and 3 mm grids for examining snow crystals. The aluminum plate is textured so crystals stay put with a flat black anodized finish for maximizing contrast. The metal has low thermal conductivity to minimize melting and preserve the crystals.
It will easily fit in your field book, pocket and the Brooks-Range Field Organizer.
4½” x 7”