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The Sand Gauge is a convenient chart for accurate and consistent determination of grain sizes.
Chart includes size classification from silt to very coarse, roundness chart with actual sand grains, bed thickness classification, field checklist, geologic time scale, and two carbonate classification charts.
Handy nylon string for carrying the Sand Gauge in the field. The Sand Gauge is flexible and waterproof.2.5" x 3.5" size makes it a convenient pocket size tool.
Two photos show front and back of the Sand Gauge.
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All prices are in USD.