SAND GAUGE CHART
Product Details:

• Nine granule patches firmly attached to the handy water-resistant plastic
• card defining roundness and size of particles from 2mm very coarse sand to 1/16mmsilt. 
  
• 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; sub-angular; sub-rounded and rounded.
  
• Chart Size. 83 x 102 mm (3-1/4" w. x 4" h.). Weight. Net 28 g (1 oz.).