Pesola Micro Spring Scale 60g x .5g ecotone making this puzzle a unique

making this puzzle a unique educational look at the sizes of a variety of North American birds

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The Sibley Guide to Birds and The Sibley Guide to Bird Life and Behavior are both universally acclaimed as the new standard source of species information

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• Did birds descend from dinosaurs

Pesola Micro Spring Scale 60g x .5g ecotone making this puzzle a uniqueSwiss made Pesola scales feature an easy tare method which allows you to zero out container weights of up to 20% of the scale's capacity. Each scale comes enclosed in a carrying case. Measurement increments in . 5g. Made of abrasion and corrosion resistant stainless metal. Accuracy: + . 3%. Two year warranty on all models.