Dmitri Mendeleev developed the periodic classification of elements. He found, when all known chemical elements were arranged in order of increasing atomic weight, the resulting table displayed a recurring pattern of properties within groups of elements.
Retro 51 Tornado Collection Pencil - Dmitri Periodic Table
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Finish: Periodic Table print over brass barrel
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Trim: Chrome Accents
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Twist-Top 1.15 mm Pencil with Pink Eraser
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Includes Extra Lead and Erasers
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Graphic Tube Packaging
Engraving is not recommended for this item.