Geological field data card pack, numerous cards for use in the field, ideal if you work or study in the sectors of earth science. Cards supplied are a grain size card, 3 rock texture cards, igneous, metamorphic and sedimentary, a field scale and specimen cards. An excellent pack ideal for students and professionals alike.
The card is printed onto translucent plastic for easy reading and comparing against grain size and texture in the field. The card includes a sorting chart, roundness scale and percentage by area images and is 149mm x 72mm, made from plastic it is completely waterproof and tear resistant.