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Al-Sci Field Sieve/Gravelometer
Product #: RO 250
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Price: $46.00
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A quick and easy way to collect data on stream pebble sizes. Eleven square openings provide size measurements from 4 to 128mm. Notches along the top and bottom edges are located at 100, 180, 200, 256, 300 and 362mm. This special tool is 8-1/2 x 15", and made of 2mm thick anodized aluminum. Shipping weight 2 lbs.
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