Sand Gauge Card
Compact Size: 2-1/2 x 3-1/2"
Gauge is loaded with sand specifics including: size classification for large class; size classification from silt to very coarse, with actual sand grains; roundness chart with actual grains; bed thickness classification; field checklist to organize notes; geologic time scale; and two carbonate classification charts.
Flexible and waterproof plastic card includes nylon lanyard, with sand grains fused to plastic.
|Approx. Ship weight||9 oz|
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