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For separating soils and aggregates. 2-mm mesh. Size..
One of the most popular base-plate compasses on the ..
Great for measuring soil slope and tree height as we..
Measure the transparency of a shallow or flowing bod..
Measure relative humidity with weather bureau-type w..
The GPS 72 is a low-cost solution for land or marine..
This water-resistant soil chart uses the Munsell Sys..
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This pocket-size meter has a rugged casing that is w..
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Durable, waterproof housing that floats Larger, 3-le..
Globe Certified!Plain-form hydrometer used to measur..
This shelter protects your weather instruments in th..
Approved for use in The GLOBE Program®. This ba..
Easily the best set of aquatic macroinvertebrate ID ..
For upper elementary, middle, and high school studen..
LaMotte® water test kits are for analysis of nat..