CAT NO: DIDACTICNE9019
Sand Gauge Chart.
Specifications: Nine granule patches firmly attached to the handy waterâ€resistant plastic card defining roundness and size of particles from 2mm very coarse sand to 1/16mm silt. A checklist defining bed thickness. Flip side of chart with tables of geologic age and carbonate classification information. Sample Panels. Very coarse; coarse; medium; fine; very fine; silt. Particle Shape Panels. Angular; subâ€angular; subâ€rounded and rounded.