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This Brooks-Range 10x magnifying glass with inch and metric scales folds flat for compact storage. Uses a one-inch glass lens for distortion free viewing with inch and millimeter scales on the perimeter of a 1-inch square viewing area. Opens to 1.875" x 1.5" x 2.25" (4.76 x 3.8 x 5.7 cm), or folds down to just over half-inch high.
That weak rime layer two feet below the snow's surface may or may not be getting worse. Only by pulling out the Brooks Range Folding Magnifier X10 and getting a closer look can you really tell if the crystals are beginning to bond. An essential piece of a snow scientist's kit, this magnifier unfolds and lets you get a 10X look at the snow so you can more accurately access and forecast the avalanche danger for your touring party.