CAT NO: DIDACTICNE6239
Grain Size Chart.
This chart is essential for all geologists. It allows classification of rock and sand grains based on size and provides a point of reference when working out in the field. It allows the geologist to classify based on a variety of properties such as size and shape, grain sorting, roundness, and sphericity of a sample. The chart consists of several measurement indicators including sphericity/roundness measuring chart; printed examples of wellâ€sorted and poorlyâ€sorted grain samples in fine, medium, and coarse ranges; four actual grain samples illustrating angular, subangular, subrounded, and rounded shapes; six grain size samples: silt, very fine sand, fine sand, medium sand, coarse sand, and very coarse sand. It also includes measurement limits for granules, pebbles, cobbles and boulders (in order of size)